diff --git a/reading-platform-frontend/src/components/course-edit/Step4IntroLesson.vue b/reading-platform-frontend/src/components/course-edit/Step4IntroLesson.vue
index 1597d66..70d1626 100644
--- a/reading-platform-frontend/src/components/course-edit/Step4IntroLesson.vue
+++ b/reading-platform-frontend/src/components/course-edit/Step4IntroLesson.vue
@@ -12,7 +12,10 @@
       style="margin-bottom: 16px"
     >
       <template #description>
-        导入课用于激发幼儿兴趣，引入课程主题。建议时长5-15分钟，重点在于吸引注意力、建立学习期待。
+        <div>导入课用于激发幼儿兴趣，引入课程主题。建议时长 5-15 分钟，重点在于吸引注意力、建立学习期待。</div>
+        <div class="form-hints">
+          <strong>必填项：</strong>课程名称、教学目标、教学准备、核心资源（至少 1 个）、教学环节（至少 1 个，含环节名称、内容、目标）；<strong>时长：</strong>5-15 分钟。
+        </div>
       </template>
     </a-alert>
 
@@ -27,6 +30,7 @@
 
       <LessonConfigPanel
         v-else
+        ref="configPanelRef"
         v-model="lessonData"
         lesson-type="INTRO"
         :min-duration="5"
@@ -69,6 +73,7 @@ const emit = defineEmits<{
 
 const loading = ref(false);
 const lessonData = ref<LessonData | null>(null);
+const configPanelRef = ref<InstanceType<typeof LessonConfigPanel> | null>(null);
 
 // 获取导入课数据
 const fetchLesson = async () => {
@@ -154,35 +159,12 @@ const handleLessonChange = () => {
   emit('change');
 };
 
-// 验证：若配置了导入课，则教学目标、教学准备、教学过程环节必填
-const validate = () => {
+// 验证：若配置了导入课，则通过 formRules 校验
+const validate = async () => {
   if (!lessonData.value) {
     return { valid: true, errors: [] as string[], warnings: ['未配置导入课'] };
   }
-
-  const errors: string[] = [];
-  if (!lessonData.value.objectives?.trim()) {
-    errors.push('请输入教学目标');
-  }
-  if (!lessonData.value.preparation?.trim()) {
-    errors.push('请输入教学准备');
-  }
-  const duration = lessonData.value.duration;
-  if (duration != null && (duration < 5 || duration > 15)) {
-    errors.push('导入课时长需在 5-15 分钟之间');
-  }
-  const steps = lessonData.value.steps || [];
-  if (steps.length < 1) {
-    errors.push('请至少添加一个教学环节');
-  } else {
-    steps.forEach((step, i) => {
-      if (!step.name?.trim()) errors.push(`第${i + 1}个环节：请填写环节名称`);
-      if (!step.content?.trim()) errors.push(`第${i + 1}个环节：请填写环节内容`);
-      if (!step.objective?.trim()) errors.push(`第${i + 1}个环节：请填写教学目标`);
-    });
-  }
-
-  return { valid: errors.length === 0, errors };
+  return configPanelRef.value?.validate() ?? { valid: true, errors: [] as string[] };
 };
 
 // 获取保存数据
@@ -232,5 +214,13 @@ defineExpose({
     border-top: 1px solid #f0f0f0;
     text-align: right;
   }
+
+  .form-hints {
+    margin-top: 8px;
+    padding-top: 8px;
+    border-top: 1px dashed rgba(24, 144, 255, 0.3);
+    font-size: 12px;
+    color: #595959;
+  }
 }
 </style>
diff --git a/reading-platform-frontend/src/components/course-edit/Step5CollectiveLesson.vue b/reading-platform-frontend/src/components/course-edit/Step5CollectiveLesson.vue
index cf70cb4..0505752 100644
--- a/reading-platform-frontend/src/components/course-edit/Step5CollectiveLesson.vue
+++ b/reading-platform-frontend/src/components/course-edit/Step5CollectiveLesson.vue
@@ -12,7 +12,10 @@
       style="margin-bottom: 16px"
     >
       <template #description>
-        集体课是课程包的核心教学活动，全班幼儿共同参与。建议时长20-30分钟，包含绘本动画、教学课件、电子绘本等核心资源。
+        <div>集体课是课程包的核心教学活动，全班幼儿共同参与。建议时长 20-30 分钟，包含绘本动画、教学课件、电子绘本等核心资源。</div>
+        <div class="form-hints">
+          <strong>必填项：</strong>课程名称、教学目标、教学准备、核心资源（至少 1 个）、教学环节（至少 1 个）、教学延伸；<strong>时长：</strong>15-45 分钟。
+        </div>
       </template>
     </a-alert>
 
@@ -27,6 +30,7 @@
 
       <LessonConfigPanel
         v-else
+        ref="configPanelRef"
         v-model="lessonData"
         lesson-type="COLLECTIVE"
         :min-duration="15"
@@ -70,6 +74,7 @@ const emit = defineEmits<{
 
 const loading = ref(false);
 const lessonData = ref<LessonData | null>(null);
+const configPanelRef = ref<InstanceType<typeof LessonConfigPanel> | null>(null);
 
 // 获取集体课数据
 const fetchLesson = async () => {
@@ -155,38 +160,12 @@ const handleLessonChange = () => {
   emit('change');
 };
 
-// 验证：若配置了集体课，则教学目标、教学准备、核心资源、时长 15-45 分钟必填
-const validate = () => {
+// 验证：若配置了集体课，则通过 formRules 校验
+const validate = async () => {
   if (!lessonData.value) {
     return { valid: true, errors: [] as string[], warnings: ['未配置集体课'] };
   }
-
-  const errors: string[] = [];
-  if (!lessonData.value.objectives?.trim()) {
-    errors.push('请输入教学目标');
-  }
-  if (!lessonData.value.preparation?.trim()) {
-    errors.push('请输入教学准备');
-  }
-  if (!lessonData.value.videoPath && !lessonData.value.pptPath && !lessonData.value.pdfPath) {
-    errors.push('请至少上传一个核心资源（动画/课件/电子绘本）');
-  }
-  const duration = lessonData.value.duration;
-  if (duration != null && (duration < 15 || duration > 45)) {
-    errors.push('集体课时长需在 15-45 分钟之间');
-  }
-  const steps = lessonData.value.steps || [];
-  if (steps.length < 1) {
-    errors.push('请至少添加一个教学环节');
-  } else {
-    steps.forEach((step, i) => {
-      if (!step.name?.trim()) errors.push(`第${i + 1}个环节：请填写环节名称`);
-      if (!step.content?.trim()) errors.push(`第${i + 1}个环节：请填写环节内容`);
-      if (!step.objective?.trim()) errors.push(`第${i + 1}个环节：请填写教学目标`);
-    });
-  }
-
-  return { valid: errors.length === 0, errors };
+  return configPanelRef.value?.validate() ?? { valid: true, errors: [] as string[] };
 };
 
 // 获取保存数据
@@ -236,5 +215,13 @@ defineExpose({
     border-top: 1px solid #f0f0f0;
     text-align: right;
   }
+
+  .form-hints {
+    margin-top: 8px;
+    padding-top: 8px;
+    border-top: 1px dashed rgba(24, 144, 255, 0.3);
+    font-size: 12px;
+    color: #595959;
+  }
 }
 </style>
diff --git a/reading-platform-frontend/src/components/course-edit/Step6DomainLessons.vue b/reading-platform-frontend/src/components/course-edit/Step6DomainLessons.vue
index 9819f1a..b310834 100644
--- a/reading-platform-frontend/src/components/course-edit/Step6DomainLessons.vue
+++ b/reading-platform-frontend/src/components/course-edit/Step6DomainLessons.vue
@@ -12,7 +12,10 @@
       style="margin-bottom: 16px"
     >
       <template #description>
-        五大领域课为可选配置，根据课程内容选择配置相关领域课程。每个领域课独立配置，包含教学目标、准备、环节等内容。
+        <div>五大领域课为可选配置，根据课程内容选择配置相关领域课程。每个领域课独立配置，包含教学目标、准备、环节等内容。</div>
+        <div class="form-hints">
+          <strong>已启用领域必填：</strong>课程名称、教学目标、教学准备、核心资源（至少 1 个）、教学环节（至少 1 个）、教学延伸；<strong>时长：</strong>15-45 分钟。
+        </div>
       </template>
     </a-alert>
 
@@ -46,8 +49,9 @@
             </a-button>
           </div>
 
-          <div v-if="domain.enabled && domain.expanded" class="domain-content">
+          <div v-if="domain.enabled" v-show="domain.expanded" class="domain-content">
             <LessonConfigPanel
+              :ref="(el: any) => setConfigPanelRef(domain.type, el)"
               v-model="domain.lessonData"
               :lesson-type="domain.type"
               :min-duration="15"
@@ -112,6 +116,15 @@ const emit = defineEmits<{
 }>();
 
 const loading = ref(false);
+const configPanelRefs = reactive<Record<string, InstanceType<typeof LessonConfigPanel> | null>>({});
+
+const setConfigPanelRef = (type: string, el: any) => {
+  if (el) {
+    configPanelRefs[type] = el;
+  } else {
+    configPanelRefs[type] = null;
+  }
+};
 
 const domains = reactive<DomainConfig[]>([
   {
@@ -253,34 +266,22 @@ const handleLessonChange = () => {
   emit('change');
 };
 
-// 验证：若启用某领域，则需填写教学目标，时长 15-45 分钟
-const validate = () => {
+// 验证：若启用某领域，则通过 formRules 校验各领域
+const validate = async () => {
   const enabledDomains = domains.filter((d) => d.enabled);
-  const errors: string[] = [];
+  const allErrors: string[] = [];
 
-  enabledDomains.forEach((domain) => {
-    if (domain.lessonData) {
-      if (!domain.lessonData.objectives?.trim()) {
-        errors.push(`${domain.name}：请填写教学目标`);
-      }
-      const duration = domain.lessonData.duration;
-      if (duration != null && (duration < 15 || duration > 45)) {
-        errors.push(`${domain.name}：时长需在 15-45 分钟之间`);
-      }
-      const steps = domain.lessonData.steps || [];
-      if (steps.length < 1) {
-        errors.push(`${domain.name}：请至少添加一个教学环节`);
-      } else {
-        steps.forEach((step, i) => {
-          if (!step.name?.trim()) errors.push(`${domain.name}：第${i + 1}个环节请填写环节名称`);
-          if (!step.content?.trim()) errors.push(`${domain.name}：第${i + 1}个环节请填写环节内容`);
-          if (!step.objective?.trim()) errors.push(`${domain.name}：第${i + 1}个环节请填写教学目标`);
-        });
+  for (const domain of enabledDomains) {
+    const panel = configPanelRefs[domain.type];
+    if (panel?.validate) {
+      const result = await panel.validate();
+      if (!result.valid && result.errors?.length) {
+        result.errors.forEach((e) => allErrors.push(`${domain.name}：${e}`));
       }
     }
-  });
+  }
 
-  return { valid: errors.length === 0, errors };
+  return { valid: allErrors.length === 0, errors: allErrors };
 };
 
 // 获取保存数据（仅返回已启用且教学目标已填写的领域）
@@ -386,5 +387,13 @@ defineExpose({
       gap: 4px;
     }
   }
+
+  .form-hints {
+    margin-top: 8px;
+    padding-top: 8px;
+    border-top: 1px dashed rgba(24, 144, 255, 0.3);
+    font-size: 12px;
+    color: #595959;
+  }
 }
 </style>
diff --git a/reading-platform-frontend/src/components/course/LessonConfigPanel.vue b/reading-platform-frontend/src/components/course/LessonConfigPanel.vue
index 3d0f0fb..7bf2005 100644
--- a/reading-platform-frontend/src/components/course/LessonConfigPanel.vue
+++ b/reading-platform-frontend/src/components/course/LessonConfigPanel.vue
@@ -1,15 +1,23 @@
 <template>
   <div class="lesson-config-panel">
+    <a-form
+      ref="formRef"
+      :model="lessonData"
+      :rules="formRules"
+      :label-col="{ span: 24 }"
+      :wrapper-col="{ span: 24 }"
+      layout="vertical"
+    >
     <!-- 基本信息 -->
     <a-card size="small" title="基本信息" class="section-card">
       <a-row :gutter="16">
         <a-col :span="12">
-          <a-form-item label="课程名称">
+          <a-form-item label="课程名称" name="name">
             <a-input v-model:value="lessonData.name" placeholder="请输入课程名称" @change="handleChange" />
           </a-form-item>
         </a-col>
         <a-col :span="12">
-          <a-form-item label="课程时长">
+          <a-form-item label="课程时长" name="duration" :extra="`建议 ${minDuration}-${maxDuration} 分钟`">
             <a-input-number
               v-model:value="lessonData.duration"
               :min="minDuration"
@@ -36,50 +44,61 @@
     <!-- 核心资源（导入课/集体课/领域课显示） -->
     <a-card v-if="showResources" size="small" class="section-card">
       <template #title>
-        <span>核心资源 <span class="required-mark">*</span></span>
+        <span>
+          核心资源 <span class="required-mark">*</span>
+        </span>
       </template>
-      <a-row :gutter="16">
-        <a-col :span="8">
-          <a-form-item label="绘本动画">
-            <FileUploader
-              v-model:file-path="lessonData.videoPath"
-              v-model:file-name="lessonData.videoName"
-              file-type="video"
-              :max-size="200"
-              @change="handleChange"
-            />
-          </a-form-item>
-        </a-col>
-        <a-col :span="8">
-          <a-form-item label="教学课件">
-            <FileUploader
-              v-model:file-path="lessonData.pptPath"
-              v-model:file-name="lessonData.pptName"
-              file-type="ppt"
-              :max-size="100"
-              @change="handleChange"
-            />
-          </a-form-item>
-        </a-col>
-        <a-col :span="8">
-          <a-form-item label="电子绘本">
-            <FileUploader
-              v-model:file-path="lessonData.pdfPath"
-              v-model:file-name="lessonData.pdfName"
-              file-type="pdf"
-              :max-size="100"
-              @change="handleChange"
-            />
-          </a-form-item>
-        </a-col>
-      </a-row>
+      <div class="field-hint">至少上传一个（动画/课件/电子绘本）</div>
+      <a-form-item
+        name="resourceCheck"
+        label=" "
+        :colon="false"
+        :label-col="{ span: 0 }"
+        :wrapper-col="{ span: 24 }"
+      >
+        <a-row :gutter="16">
+          <a-col :span="8">
+            <a-form-item label="绘本动画" :name="undefined">
+              <FileUploader
+                v-model:file-path="lessonData.videoPath"
+                v-model:file-name="lessonData.videoName"
+                file-type="video"
+                :max-size="200"
+                @change="handleChange"
+              />
+            </a-form-item>
+          </a-col>
+          <a-col :span="8">
+            <a-form-item label="教学课件" :name="undefined">
+              <FileUploader
+                v-model:file-path="lessonData.pptPath"
+                v-model:file-name="lessonData.pptName"
+                file-type="ppt"
+                :max-size="100"
+                @change="handleChange"
+              />
+            </a-form-item>
+          </a-col>
+          <a-col :span="8">
+            <a-form-item label="电子绘本" :name="undefined">
+              <FileUploader
+                v-model:file-path="lessonData.pdfPath"
+                v-model:file-name="lessonData.pdfName"
+                file-type="pdf"
+                :max-size="100"
+                @change="handleChange"
+              />
+            </a-form-item>
+          </a-col>
+        </a-row>
+      </a-form-item>
     </a-card>
 
     <!-- 教学目标 & 教学准备 -->
     <a-card size="small" class="section-card">
       <a-row :gutter="16">
         <a-col :span="12">
-          <a-form-item label="教学目标" required>
+          <a-form-item label="教学目标" name="objectives">
             <a-textarea
               v-model:value="lessonData.objectives"
               :rows="4"
@@ -94,7 +113,7 @@
           </a-form-item>
         </a-col>
         <a-col :span="12">
-          <a-form-item label="教学准备" required>
+          <a-form-item label="教学准备" name="preparation">
             <a-textarea
               v-model:value="lessonData.preparation"
               :rows="4"
@@ -116,24 +135,31 @@
       <template #title>
         <span>教学环节 <span class="required-mark">*</span></span>
       </template>
+      <div class="field-hint">至少添加一个环节，每个环节需填写名称、内容、目标</div>
+      <a-form-item name="steps">
       <LessonStepsEditor
         v-model="lessonData.steps"
         :show-template="showTemplate"
         @change="handleChange"
       />
+      </a-form-item>
     </a-card>
 
     <!-- 教学延伸 & 教学反思（仅集体课/领域课显示） -->
     <a-card v-if="showExtension" size="small" class="section-card">
       <a-row :gutter="16">
         <a-col :span="12">
-          <a-form-item label="教学延伸">
+          <a-form-item
+            label="教学延伸"
+            :name="extensionRequired ? 'extension' : undefined"
+            :extra="extensionRequired ? '必填（集体课要求）' : '可选'"
+          >
             <a-textarea
               v-model:value="lessonData.extension"
               :rows="3"
               :maxlength="1500"
               show-count
-              placeholder="请输入教学延伸活动建议（可选）"
+              :placeholder="extensionRequired ? '请输入教学延伸活动建议（必填）' : '请输入教学延伸活动建议（可选）'"
               @change="handleChange"
             />
           </a-form-item>
@@ -166,11 +192,13 @@
         />
       </a-form-item>
     </a-card>
+    </a-form>
   </div>
 </template>
 
 <script setup lang="ts">
-import { reactive, watch, computed } from 'vue';
+import { ref, reactive, watch, computed } from 'vue';
+import type { FormInstance } from 'ant-design-vue';
 import FileUploader from './FileUploader.vue';
 import LessonStepsEditor from './LessonStepsEditor.vue';
 import type { StepData } from './LessonStepsEditor.vue';
@@ -196,6 +224,8 @@ export interface LessonData {
   useTemplate: boolean;
   steps: StepData[];
   isNew?: boolean;
+  /** 仅用于表单校验，不持久化 */
+  resourceCheck?: string;
 }
 
 interface Props {
@@ -242,6 +272,7 @@ const defaultLessonData: LessonData = {
   assessmentData: '',
   useTemplate: false,
   steps: [],
+  resourceCheck: '',
 };
 
 const lessonData = reactive<LessonData>({
@@ -249,37 +280,120 @@ const lessonData = reactive<LessonData>({
   ...props.modelValue,
 });
 
+// 教学延伸是否必填：集体课、领域课必填（结构同集体课）
+const extensionRequired = computed(
+  () => props.lessonType === 'COLLECTIVE' || props.lessonType?.startsWith('DOMAIN_')
+);
+
+const formRef = ref<FormInstance>();
+
+// formRules 根据 lessonType 动态生成
+const formRules = computed(() => {
+  const minD = props.minDuration ?? 5;
+  const maxD = props.maxDuration ?? 60;
+  const rules: Record<string, any[]> = {
+    name: [{ required: true, whitespace: true, message: '请输入课程名称' }],
+    objectives: [{ required: true, whitespace: true, message: '请输入教学目标' }],
+    preparation: [{ required: true, whitespace: true, message: '请输入教学准备' }],
+    duration: [
+      { required: true, message: '请输入课程时长' },
+      {
+        type: 'number' as const,
+        min: minD,
+        max: maxD,
+        message: `课程时长需在 ${minD}-${maxD} 分钟之间`,
+      },
+    ],
+    steps: [
+      {
+        validator: (_: unknown, value: StepData[] | undefined) => {
+          const steps = value || [];
+          if (steps.length < 1) {
+            return Promise.reject(new Error('请至少添加一个教学环节'));
+          }
+          for (let i = 0; i < steps.length; i++) {
+            const s = steps[i];
+            if (!s.name?.trim()) {
+              return Promise.reject(new Error(`第${i + 1}个环节：请填写环节名称`));
+            }
+            if (!s.content?.trim()) {
+              return Promise.reject(new Error(`第${i + 1}个环节：请填写环节内容`));
+            }
+            if (!s.objective?.trim()) {
+              return Promise.reject(new Error(`第${i + 1}个环节：请填写教学目标`));
+            }
+          }
+          return Promise.resolve();
+        },
+      },
+    ],
+  };
+  if (props.showResources) {
+    rules.resourceCheck = [
+      {
+        validator: (_: unknown, _val: string) => {
+          const has = lessonData.videoPath || lessonData.pptPath || lessonData.pdfPath;
+          if (!has) {
+            return Promise.reject(new Error('请至少上传一个核心资源（动画/课件/电子绘本）'));
+          }
+          return Promise.resolve();
+        },
+      },
+    ];
+  }
+  if (extensionRequired.value) {
+    rules.extension = [
+      { required: true, whitespace: true, message: '请输入教学延伸活动建议' },
+    ];
+  }
+  return rules;
+});
+
+// 同步 resourceCheck 用于校验触发
+watch(
+  () => [lessonData.videoPath, lessonData.pptPath, lessonData.pdfPath],
+  () => {
+    lessonData.resourceCheck = lessonData.videoPath || lessonData.pptPath || lessonData.pdfPath || '';
+  },
+  { immediate: true }
+);
+
 // 监听外部值变化
 watch(
   () => props.modelValue,
   (newVal) => {
     Object.assign(lessonData, defaultLessonData, newVal);
+    lessonData.resourceCheck = lessonData.videoPath || lessonData.pptPath || lessonData.pdfPath || '';
   },
   { deep: true }
 );
 
-// 处理变化
+// 处理变化（排除校验用字段，不传给父组件）
 const handleChange = () => {
-  emit('update:modelValue', { ...lessonData });
+  const { resourceCheck, ...toEmit } = lessonData;
+  emit('update:modelValue', toEmit as LessonData);
   emit('change');
 };
 
+// 表单校验（供 Step4/5/6 调用）
+const validate = async () => {
+  try {
+    await formRef.value?.validate();
+    return { valid: true, errors: [] as string[] };
+  } catch (err: any) {
+    const errorFields = err?.errorFields || [];
+    const errors = errorFields
+      .map((f: any) => f.errors?.[0])
+      .filter(Boolean) as string[];
+    return { valid: false, errors: errors.length ? errors : ['请完成表单必填项'] };
+  }
+};
+
 // 暴露方法
 defineExpose({
   lessonData,
-  validate: () => {
-    const errors: string[] = [];
-    if (!lessonData.name) {
-      errors.push('请输入课程名称');
-    }
-    if (!lessonData.objectives) {
-      errors.push('请输入教学目标');
-    }
-    if (!lessonData.preparation) {
-      errors.push('请输入教学准备');
-    }
-    return { valid: errors.length === 0, errors };
-  },
+  formRef,
+  validate,
 });
 </script>
 
@@ -317,6 +431,18 @@ defineExpose({
     margin-left: 2px;
   }
 
+  .optional-tag {
+    font-size: 12px;
+    color: #8c8c8c;
+    margin-left: 4px;
+  }
+
+  .field-hint {
+    font-size: 12px;
+    color: #8c8c8c;
+    margin-bottom: 12px;
+  }
+
   :deep(.ant-form-item) {
     margin-bottom: 12px;
 
diff --git a/reading-platform-frontend/src/components/course/LessonStepsEditor.vue b/reading-platform-frontend/src/components/course/LessonStepsEditor.vue
index 391e15c..14c7f2d 100644
--- a/reading-platform-frontend/src/components/course/LessonStepsEditor.vue
+++ b/reading-platform-frontend/src/components/course/LessonStepsEditor.vue
@@ -278,11 +278,15 @@ defineExpose({
     .step-name-field {
       flex: 1;
       display: flex;
-      flex-direction: column;
-      gap: 4px;
+      flex-direction: row;
+      align-items: center;
+      gap: 8px;
+      min-width: 0;
 
       .field-label {
+        flex-shrink: 0;
         margin-bottom: 0;
+        white-space: nowrap;
       }
     }