diff --git a/inventory-web/src/views/stock/stocktake/index.vue b/inventory-web/src/views/stock/stocktake/index.vue
index 92088d2..43d4034 100644
--- a/inventory-web/src/views/stock/stocktake/index.vue
+++ b/inventory-web/src/views/stock/stocktake/index.vue
@@ -98,7 +98,16 @@
               <!-- ★ 抽盘范围：系统推荐 + 人工在库位树上勾选微调，最终范围以勾选结果为准 -->
               <div v-if="newScopeType === 'active'" class="scope-panel">
                 <div class="scope-recommend-row">
-                  <span class="scope-recommend-text">近 {{ RECOMMEND_DAYS }} 天最活跃的前</span>
+                  <span class="scope-recommend-text">近</span>
+                  <el-input-number
+                      v-model="recommendDays"
+                      :min="1"
+                      :max="365"
+                      size="small"
+                      controls-position="right"
+                      class="scope-days-input"
+                  />
+                  <span class="scope-recommend-text">天最活跃的前</span>
                   <el-input-number
                       v-model="recTopN"
                       :min="1"
@@ -122,6 +131,9 @@
                 <!-- 左：库位树（勾选） ｜ 右：已选明细（可关闭，与左侧强同步） -->
                 <div class="scope-columns">
                   <div class="scope-col-left">
+                    <div class="scope-hint">
+                      💡 提示：勾选父级货架，将自动涵盖其下属的所有末级库位及库存。
+                    </div>
                     <el-tree
                         ref="locTreeRef"
                         v-loading="treeLoading"
@@ -753,8 +765,8 @@ const modeLabel = (m?: string | null) => (m ? MODE_LABELS[m] || m : '')
 const scopeLabel = (s?: string | null) => (s ? SCOPE_LABELS[s] || s : '')
 
 // ★ 抽盘范围：系统推荐 + 人工在库位树上微调
-const RECOMMEND_DAYS = 30
-const recTopN = ref(50)            // 推荐「近 N 天最活跃的前 X 个库位」中的 X
+const recommendDays = ref(90)      // 推荐「近 N 天最活跃的前 X 个库位」中的 N（可编辑）
+const recTopN = ref(10)            // 同上，X
 const recLoading = ref(false)      // 获取推荐中
 const treeLoading = ref(false)     // 库位树加载中
 const locTreeData = ref<any[]>([]) // 库位树（已按当前公司前缀过滤）
@@ -825,11 +837,11 @@ const fetchRecommendLocations = async () => {
     const res: any = await request({
       url: '/v1/inbound/stock/stocktake/recommend-locations',
       method: 'get',
-      params: withCompany({ days: RECOMMEND_DAYS, top_n: recTopN.value })
+      params: withCompany({ days: recommendDays.value, top_n: recTopN.value })
     })
     const locs: string[] = res?.data?.locations || []
     if (!locs.length) {
-      ElMessage.warning(`最近 ${RECOMMEND_DAYS} 天没有找到活跃库位`)
+      ElMessage.warning(`最近 ${recommendDays.value} 天没有找到活跃库位`)
       return
     }
 
@@ -860,7 +872,7 @@ const buildScopeConfig = () => {
   const nodes = locTreeRef.value?.getCheckedNodes() || []
   return {
     locations: nodes.map((n: any) => n.full_path).filter(Boolean),
-    recommend_days: RECOMMEND_DAYS,
+    recommend_days: recommendDays.value,
     recommend_top_n: recTopN.value
   }
 }
@@ -1868,7 +1880,15 @@ const goToVarianceReview = () => {
   margin-bottom: 8px;
 }
 .scope-recommend-text { font-size: 12px; color: #606266; }
-.scope-topn-input { width: 100px; }
+.scope-topn-input { width: 96px; }
+.scope-days-input { width: 96px; }
+/* 操作提示：柔和的灰色小字 */
+.scope-hint {
+  font-size: 12px;
+  color: #909399;
+  line-height: 1.5;
+  margin-bottom: 6px;
+}
 
 /* 左右双栏：左 60% 库位树 ｜ 右 40% 已选明细 */
 .scope-columns {