diff --git a/astrbot/core/knowledge_base/kb_manager_lifecycle.py b/astrbot/core/knowledge_base/kb_manager_lifecycle.py
index 97ed80437..0768874fa 100644
--- a/astrbot/core/knowledge_base/kb_manager_lifecycle.py
+++ b/astrbot/core/knowledge_base/kb_manager_lifecycle.py
@@ -177,6 +177,7 @@ class KnowledgeBaseManager:
             storage_path=files_path,
             parsers=parsers,
             chunker=chunker,
+            provider_manager=self.provider_manager,
         )
 
     async def _init_retrieval_manager(self):
diff --git a/astrbot/core/knowledge_base/manager.py b/astrbot/core/knowledge_base/manager.py
index 497f64ac7..c4d31ba45 100644
--- a/astrbot/core/knowledge_base/manager.py
+++ b/astrbot/core/knowledge_base/manager.py
@@ -34,6 +34,7 @@ class KBManager:
         storage_path: str,
         parsers: dict[str, BaseParser],
         chunker: BaseChunker,
+        provider_manager=None,
     ):
         self.db = db
         self.vec_db = vec_db
@@ -42,6 +43,7 @@ class KBManager:
         self.files_path = self.storage_path / "files"
         self.parsers = parsers
         self.chunker = chunker
+        self.provider_manager = provider_manager
 
         # 确保目录存在
         self.media_path.mkdir(parents=True, exist_ok=True)
@@ -63,7 +65,23 @@ class KBManager:
         top_m_final: Optional[int] = None,
         enable_rerank: Optional[bool] = None,
     ) -> KnowledgeBase:
-        """创建知识库"""
+        """创建知识库
+
+        Args:
+            enable_rerank: 是否启用重排序。
+                - 如果明确传入 True/False，则使用该值
+                - 如果为 None，则根据是否有可用的 rerank provider 自动决定
+        """
+        # 智能决定 enable_rerank 的默认值
+        if enable_rerank is None:
+            # 检查是否有可用的 rerank provider
+            has_rerank_provider = (
+                self.provider_manager
+                and hasattr(self.provider_manager, 'rerank_provider_insts')
+                and len(self.provider_manager.rerank_provider_insts) > 0
+            )
+            enable_rerank = has_rerank_provider
+
         kb = KnowledgeBase(
             kb_name=kb_name,
             description=description,
@@ -75,7 +93,7 @@ class KBManager:
             top_k_dense=top_k_dense if top_k_dense is not None else 50,
             top_k_sparse=top_k_sparse if top_k_sparse is not None else 50,
             top_m_final=top_m_final if top_m_final is not None else 5,
-            enable_rerank=enable_rerank if enable_rerank is not None else True,
+            enable_rerank=enable_rerank,
         )
         async with self.db.get_db() as session:
             session.add(kb)
diff --git a/astrbot/core/knowledge_base/models.py b/astrbot/core/knowledge_base/models.py
index 28adbaa0d..6ec77ad93 100644
--- a/astrbot/core/knowledge_base/models.py
+++ b/astrbot/core/knowledge_base/models.py
@@ -49,7 +49,7 @@ class KnowledgeBase(SQLModel, table=True):
     top_k_dense: Optional[int] = Field(default=50, nullable=True)
     top_k_sparse: Optional[int] = Field(default=50, nullable=True)
     top_m_final: Optional[int] = Field(default=5, nullable=True)
-    enable_rerank: Optional[bool] = Field(default=True, nullable=True)
+    enable_rerank: Optional[bool] = Field(default=False, nullable=True)
     created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
     updated_at: datetime = Field(
         default_factory=lambda: datetime.now(timezone.utc),
diff --git a/dashboard/src/views/knowledge-base/components/RetrievalTab.vue b/dashboard/src/views/knowledge-base/components/RetrievalTab.vue
index f041d94f1..2bc5e6346 100644
--- a/dashboard/src/views/knowledge-base/components/RetrievalTab.vue
+++ b/dashboard/src/views/knowledge-base/components/RetrievalTab.vue
@@ -45,6 +45,9 @@
                 density="compact"
                 persistent-hint
               />
+              <v-alert v-if="enableRerank" type="info" variant="tonal" class="mt-2" density="compact">
+                如果没有配置重排序模型提供商，将跳过重排序步骤
+              </v-alert>
             </v-card>
           </v-col>
         </v-row>
@@ -147,7 +150,7 @@ const props = defineProps<{
 const loading = ref(false)
 const query = ref('')
 const topK = ref(5)
-const enableRerank = ref(true)
+const enableRerank = ref(false)
 const results = ref<any[]>([])
 const hasSearched = ref(false)
 
diff --git a/dashboard/src/views/knowledge-base/components/SessionsTab.vue b/dashboard/src/views/knowledge-base/components/SessionsTab.vue
index 8cc4a3a33..c5c0e56e9 100644
--- a/dashboard/src/views/knowledge-base/components/SessionsTab.vue
+++ b/dashboard/src/views/knowledge-base/components/SessionsTab.vue
@@ -117,20 +117,19 @@ const headers = [
 // 加载使用该知识库的会话
 const loadSessions = async () => {
   loading.value = true
-  console.log('[SessionsTab] 开始加载会话列表, kb_id:', props.kbId)
+  
 
   try {
     const url = '/api/kb/session/config/list_by_kb'
     const params = { kb_id: props.kbId }
-    console.log('[SessionsTab] 请求URL:', url, '参数:', params)
+    
 
     const response = await axios.get(url, { params })
-    console.log('[SessionsTab] 响应状态:', response.status)
-    console.log('[SessionsTab] 响应数据:', response.data)
+    
 
     if (response.data.status === 'ok') {
       sessions.value = response.data.data.sessions
-      console.log('[SessionsTab] 成功加载会话列表, 数量:', sessions.value.length)
+      
     } else {
       console.error('[SessionsTab] API返回错误:', response.data.message)
       showSnackbar(response.data.message || t('sessions.loadFailed'), 'error')
diff --git a/dashboard/src/views/knowledge-base/components/SettingsTab.vue b/dashboard/src/views/knowledge-base/components/SettingsTab.vue
index 7eba48d02..e0f10936f 100644
--- a/dashboard/src/views/knowledge-base/components/SettingsTab.vue
+++ b/dashboard/src/views/knowledge-base/components/SettingsTab.vue
@@ -68,8 +68,14 @@
               <v-checkbox
                 v-model="formData.enable_rerank"
                 :label="t('settings.enableRerank')"
+                :hint="rerankProviders.length === 0 ? '未检测到可用的重排序模型提供商' : '使用重排序模型提高检索质量'"
+                :disabled="rerankProviders.length === 0"
                 color="primary"
+                persistent-hint
               />
+              <v-alert v-if="formData.enable_rerank && rerankProviders.length === 0" type="warning" variant="tonal" class="mt-2" density="compact">
+                当前没有可用的重排序模型提供商,请先在提供商管理中添加支持 rerank 的模型
+              </v-alert>
             </v-col>
           </v-row>
 
@@ -211,7 +217,7 @@ const formData = ref({
   top_k_dense: 50,
   top_k_sparse: 50,
   top_m_final: 5,
-  enable_rerank: true,
+  enable_rerank: false,
   embedding_provider_id: '',
   rerank_provider_id: ''
 })
@@ -225,7 +231,7 @@ watch(() => props.kb, (kb) => {
       top_k_dense: kb.top_k_dense || 50,
       top_k_sparse: kb.top_k_sparse || 50,
       top_m_final: kb.top_m_final || 5,
-      enable_rerank: kb.enable_rerank !== false,
+      enable_rerank: kb.enable_rerank === true,
       embedding_provider_id: kb.embedding_provider_id || '',
       rerank_provider_id: kb.rerank_provider_id || ''
     }