diff --git a/webui_pages/knowledge_base/knowledge_base.py b/webui_pages/knowledge_base/knowledge_base.py
index 0a5e532..1b29cbe 100644
--- a/webui_pages/knowledge_base/knowledge_base.py
+++ b/webui_pages/knowledge_base/knowledge_base.py
@@ -32,6 +32,7 @@ def config_aggrid(
 def knowledge_base_page(api: ApiRequest):
     # api = ApiRequest(base_url="http://127.0.0.1:7861", no_remote_api=True)
     kb_list = get_kb_details()
+    kb_names = [x["kb_name"] for x in kb_list]
 
     cols = st.columns([3, 1, 1, 3])
     new_kb_name = cols[0].text_input(
@@ -46,7 +47,7 @@ def knowledge_base_page(api: ApiRequest):
             disabled=not bool(new_kb_name),
             use_container_width=True,
     ) and new_kb_name:
-        if new_kb_name in kb_list:
+        if new_kb_name in kb_names:
             st.error(f"名为 {new_kb_name} 的知识库已经存在！")
         else:
             ret = api.create_knowledge_base(new_kb_name)
@@ -58,7 +59,7 @@ def knowledge_base_page(api: ApiRequest):
             disabled=not bool(new_kb_name),
             use_container_width=True,
     ) and new_kb_name:
-        if new_kb_name in kb_list:
+        if new_kb_name in kb_names:
             ret = api.delete_knowledge_base(new_kb_name)
             st.toast(ret["msg"])
             st.experimental_rerun()
diff --git a/webui_pages/utils.py b/webui_pages/utils.py
index 9780dc6..d1e5013 100644
--- a/webui_pages/utils.py
+++ b/webui_pages/utils.py
@@ -409,7 +409,7 @@ class ApiRequest:
         else:
             response = self.post(
                 "/knowledge_base/delete_knowledge_base",
-                json={"knowledge_base_name": knowledge_base_name},
+                json=f"{knowledge_base_name}",
             )
             return response.json()