diff --git a/frontend/app/web-gold/src/views/material/Mix.vue b/frontend/app/web-gold/src/views/material/Mix.vue
index 03f09087c4..a8f94f7d9b 100644
--- a/frontend/app/web-gold/src/views/material/Mix.vue
+++ b/frontend/app/web-gold/src/views/material/Mix.vue
@@ -148,24 +148,30 @@
                 <!-- 场景内容 -->
                 <div class="scene-body">
                   <template v-if="scene.candidates?.length > 0">
-                    <div
-                      v-for="(candidate, cIndex) in scene.candidates"
-                      :key="cIndex"
-                      class="candidate-thumb"
-                      @click.stop="removeCandidate(index, cIndex)"
+                    <!-- 候选素材可拖拽排序 -->
+                    <draggable
+                      v-model="scene.candidates"
+                      item-key="fileId"
+                      animation="200"
+                      class="candidates-draggable"
+                      :group="{ name: `scene-${index}` }"
                     >
-                      <img
-                        v-if="getFileById(candidate.fileId)?.coverBase64"
-                        :src="getFileById(candidate.fileId).coverBase64"
-                      />
-                      <div v-else class="thumb-placeholder">
-                        <VideoCameraOutlined />
-                      </div>
-                      <div class="thumb-order">{{ cIndex + 1 }}</div>
-                      <div class="thumb-remove">
-                        <CloseOutlined />
-                      </div>
-                    </div>
+                      <template #item="{ element: candidate, index: cIndex }">
+                        <div class="candidate-thumb">
+                          <img
+                            v-if="getFileById(candidate.fileId)?.coverBase64"
+                            :src="getFileById(candidate.fileId).coverBase64"
+                          />
+                          <div v-else class="thumb-placeholder">
+                            <VideoCameraOutlined />
+                          </div>
+                          <div class="thumb-order">{{ cIndex + 1 }}</div>
+                          <div class="thumb-remove" @click.stop="removeCandidate(index, cIndex)">
+                            <CloseOutlined />
+                          </div>
+                        </div>
+                      </template>
+                    </draggable>
                     <div
                       v-if="scene.candidates.length < constants.MAX_CANDIDATES_PER_SCENE"
                       class="candidate-add"
@@ -420,19 +426,18 @@ watch(sceneCount, (newCount) => {
   }
 }, { immediate: true })
 
-// 当 clipDuration 变化时，同步更新所有场景的 duration，并保存到本地
-watch(() => formData.value.clipDuration, (newDuration) => {
-  localStorage.setItem('mix-clip-duration', newDuration.toString())
+// 同步场景时长并保存参数到本地
+watch([
+  () => formData.value.clipDuration,
+  () => formData.value.totalDuration
+], ([clipDuration, totalDuration]) => {
+  localStorage.setItem('mix-clip-duration', clipDuration.toString())
+  localStorage.setItem('mix-total-duration', totalDuration.toString())
   dataState.value.scenes.forEach(scene => {
-    scene.duration = newDuration
+    scene.duration = clipDuration
   })
 })
 
-// 当 totalDuration 变化时，保存到本地
-watch(() => formData.value.totalDuration, (newDuration) => {
-  localStorage.setItem('mix-total-duration', newDuration.toString())
-})
-
 const onSceneDragEnd = () => {
   dataState.value.scenes.forEach((scene, index) => {
     scene.index = index
@@ -450,11 +455,8 @@ const clearScenes = () => {
 }
 
 const removeCandidate = (sceneIndex, candidateIndex) => {
-  const candidates = dataState.value.scenes[sceneIndex]?.candidates
-  if (candidates?.[candidateIndex] !== undefined) {
-    candidates.splice(candidateIndex, 1)
-    message.success('已移除候选')
-  }
+  dataState.value.scenes[sceneIndex]?.candidates?.splice(candidateIndex, 1)
+  message.success('已移除候选')
 }
 
 const openSceneSelector = (index) => {
@@ -462,20 +464,6 @@ const openSceneSelector = (index) => {
   uiState.value.selectorVisible = true
 }
 
-const openGroupSelector = (index) => {
-  const groups = dataState.value.groupList
-  if (groups.length === 0) return
-
-  const currentGroupId = dataState.value.scenes[index].groupId
-  const currentIndex = groups.findIndex(g => g.id === currentGroupId)
-  const nextIndex = (currentIndex + 1) % groups.length
-  const nextGroup = groups[nextIndex]
-
-  dataState.value.scenes[index].groupId = nextGroup.id
-  dataState.value.scenes[index].candidates = []
-  loadGroupFiles(nextGroup.id)
-  message.success(`场景${index + 1} 切换到 ${nextGroup.name}`)
-}
 
 // ════════════════════════════════════════════════════════════════════════════
 // 素材操作
@@ -607,7 +595,7 @@ const handleModalConfirm = ({ sceneIndex, fileIds, setGroupId }) => {
     fileUrl: getFileById(fileId)?.fileUrl
   }))
 
-  if (setGroupId !== null && setGroupId !== undefined) {
+  if (setGroupId != null) {
     scene.groupId = setGroupId
   }
 
@@ -959,6 +947,12 @@ onMounted(() => {
     min-height: 90px;
     overflow-x: auto;
 
+    // 可拖拽容器
+    .candidates-draggable {
+      display: flex;
+      gap: var(--space-2);
+    }
+
     .candidate-thumb {
       position: relative;
       width: 100px;
@@ -966,10 +960,14 @@ onMounted(() => {
       border-radius: var(--radius-button);
       overflow: hidden;
       flex-shrink: 0;
-      cursor: pointer;
+      cursor: grab;
       border: 2px solid transparent;
       transition: all var(--duration-base) ease;
 
+      &:active {
+        cursor: grabbing;
+      }
+
       img {
         width: 100%;
         height: 100%;
@@ -1001,24 +999,38 @@ onMounted(() => {
         font-size: var(--font-size-xs);
         font-weight: 600;
         border-radius: 50%;
+        z-index: 2;
       }
 
-      // 🗑️ 删除遮罩
+      // 🗑️ 删除按钮 - 右上角小按钮
       .thumb-remove {
         position: absolute;
-        inset: 0;
+        top: 2px;
+        right: 2px;
+        width: 20px;
+        height: 20px;
         display: flex;
         align-items: center;
         justify-content: center;
-        background: rgba(239, 68, 68, 0.9);
+        background: rgba(0, 0, 0, 0.6);
         color: var(--color-text-inverse);
-        font-size: var(--font-size-md);
+        font-size: 10px;
+        border-radius: 50%;
         opacity: 0;
-        transition: opacity var(--duration-base) ease;
+        z-index: 3;
+        cursor: pointer;
+        transition: all var(--duration-fast) ease;
+
+        &:hover {
+          background: var(--color-error-500);
+          transform: scale(1.1);
+        }
       }
 
+      // hover 效果 - 柔和的高亮边框
       &:hover {
-        border-color: @danger;
+        border-color: var(--color-primary-400);
+        box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
 
         .thumb-remove {
           opacity: 1;
diff --git a/frontend/app/web-gold/src/views/material/components/SceneSelectorModal.vue b/frontend/app/web-gold/src/views/material/components/SceneSelectorModal.vue
index c1b28f47a1..b9141ab002 100644
--- a/frontend/app/web-gold/src/views/material/components/SceneSelectorModal.vue
+++ b/frontend/app/web-gold/src/views/material/components/SceneSelectorModal.vue
@@ -21,15 +21,15 @@
 
       <!-- 分组切换 -->
       <div v-if="groupList.length > 1" class="group-tabs">
-        <a-tag
+        <div
           v-for="g in groupList"
           :key="g.id"
-          :color="selectorGroupId === g.id ? 'blue' : 'default'"
-          style="cursor: pointer;"
+          class="group-tab-item"
+          :class="{ 'group-tab-item--active': selectorGroupId === g.id }"
           @click="handleSelectorGroupChange(g.id)"
         >
           {{ g.name }}
-        </a-tag>
+        </div>
       </div>
 
       <a-button type="text" size="small" @click="$emit('update:visible', false)">
@@ -134,6 +134,8 @@ const props = defineProps({
 
 const emit = defineEmits(['update:visible', 'confirm', 'load-group-files'])
 
+const LOCAL_STORAGE_KEY = 'mix-scene-selector-group-id'
+
 const selectorGroupId = ref(null)
 const tempSelectedFiles = ref([])
 
@@ -152,7 +154,28 @@ const selectorFiles = computed(() => {
 watch(() => props.visible, (visible) => {
   if (visible) {
     tempSelectedFiles.value = [...props.initialCandidates]
-    selectorGroupId.value = props.sceneGroupId || props.globalGroupId || null
+
+    // 优先级：1. 场景自带分组 2. 本地存储的分组 3. 全局分组 4. 第一个分组
+    let targetGroupId = props.sceneGroupId
+
+    if (!targetGroupId) {
+      const savedGroupId = localStorage.getItem(LOCAL_STORAGE_KEY)
+      if (savedGroupId && props.groupList.some(g => String(g.id) === savedGroupId)) {
+        targetGroupId = savedGroupId
+      }
+    }
+
+    if (!targetGroupId && props.globalGroupId) {
+      targetGroupId = props.globalGroupId
+    }
+
+    if (!targetGroupId && props.groupList.length > 0) {
+      targetGroupId = props.groupList[0].id
+    }
+
+    selectorGroupId.value = targetGroupId
+
+    // 加载分组文件
     if (selectorGroupId.value && !props.allGroupFiles[selectorGroupId.value]) {
       emit('load-group-files', selectorGroupId.value)
     }
@@ -174,11 +197,6 @@ onUnmounted(() => window.removeEventListener('keydown', handleKeydown))
 const isSelected = (fileId) => tempSelectedFiles.value.includes(fileId)
 const getSelectionOrder = (fileId) => tempSelectedFiles.value.indexOf(fileId) + 1
 
-const getFileName = (fileId) => {
-  const file = selectorFiles.value.find(f => f.id === fileId)
-  return file ? (file.displayName || file.fileName) : '未知'
-}
-
 const toggleSelection = (file) => {
   const index = tempSelectedFiles.value.indexOf(file.id)
   if (index > -1) {
@@ -192,11 +210,6 @@ const toggleSelection = (file) => {
   }
 }
 
-const removeSelection = (fileId) => {
-  const index = tempSelectedFiles.value.indexOf(fileId)
-  if (index > -1) tempSelectedFiles.value.splice(index, 1)
-}
-
 const handleQuickConfirm = (file) => {
   if (!isSelected(file.id)) toggleSelection(file)
   handleConfirm()
@@ -236,6 +249,8 @@ const handleAutoFill = () => {
 
 const handleSelectorGroupChange = (groupId) => {
   selectorGroupId.value = groupId
+  // 保存到本地存储
+  localStorage.setItem(LOCAL_STORAGE_KEY, String(groupId))
   tempSelectedFiles.value = []
   if (groupId && !props.allGroupFiles[groupId]) {
     emit('load-group-files', groupId)
@@ -345,7 +360,35 @@ const handleConfirm = () => {
 
   .group-tabs {
     display: flex;
-    gap: var(--space-1);
+    gap: var(--space-2);
+    flex: 1;
+    justify-content: center;
+  }
+
+  .group-tab-item {
+    padding: var(--space-2) var(--space-4);
+    font-size: var(--font-size-sm);
+    font-weight: 500;
+    color: @text-secondary;
+    background: var(--color-gray-100);
+    border-radius: var(--radius-button);
+    cursor: pointer;
+    transition: all var(--duration-base) ease;
+    user-select: none;
+
+    &:hover {
+      background: var(--color-gray-200);
+      color: @text;
+    }
+
+    &--active {
+      background: @primary;
+      color: var(--color-text-inverse);
+
+      &:hover {
+        background: @primary-hover;
+      }
+    }
   }
 }