diff --git a/src/renderer/src/i18n/locales/en-us.json b/src/renderer/src/i18n/locales/en-us.json
index b1016d83..a39c2637 100644
--- a/src/renderer/src/i18n/locales/en-us.json
+++ b/src/renderer/src/i18n/locales/en-us.json
@@ -297,8 +297,8 @@
       "url_added": "URL added",
       "url_placeholder": "Enter URL, multiple URLs separated by Enter",
       "urls": "URLs",
-      "threshold_tooltip": "Match threshold",
-      "threshold_placeholder": "Default value (0.0)",
+      "threshold_tooltip": "Used to evaluate the relevance between the user's question and the content in the knowledge base (0-1)",
+      "threshold_placeholder": "Not set",
       "threshold_too_large_or_small": "Threshold cannot be greater than 1 or less than 0",
       "no_match": "No matching content found in the knowledge base.",
       "threshold": "Matching threshold"
diff --git a/src/renderer/src/i18n/locales/ja-jp.json b/src/renderer/src/i18n/locales/ja-jp.json
index 62052c3c..94ee7182 100644
--- a/src/renderer/src/i18n/locales/ja-jp.json
+++ b/src/renderer/src/i18n/locales/ja-jp.json
@@ -297,8 +297,8 @@
       "url_added": "URLが追加されました",
       "url_placeholder": "URLを入力, 複数のURLはEnterで区切る",
       "urls": "URL",
-      "threshold_tooltip": "マッチングしきい値",
-      "threshold_placeholder": "デフォルト値(0.0)",
+      "threshold_tooltip": "ユーザーの質問と知識ベースの内容の関連性を評価するためのしきい値（0-1）",
+      "threshold_placeholder": "未設置",
       "threshold_too_large_or_small": "しきい値は0より大きく1より小さい必要があります",
       "no_match": "知識ベースの内容が見つかりませんでした。",
       "threshold": "マッチング度閾値"
diff --git a/src/renderer/src/i18n/locales/ru-ru.json b/src/renderer/src/i18n/locales/ru-ru.json
index 22bcf4e6..cdf67b74 100644
--- a/src/renderer/src/i18n/locales/ru-ru.json
+++ b/src/renderer/src/i18n/locales/ru-ru.json
@@ -297,8 +297,8 @@
       "url_added": "URL добавлен",
       "url_placeholder": "Введите URL, несколько URL через Enter",
       "urls": "URL-адреса",
-      "threshold_tooltip": "Порог совпадения",
-      "threshold_placeholder": "По умолчанию (0.0)",
+      "threshold_tooltip": "Используется для оценки соответствия между пользовательским вопросом и содержимым в базе знаний (0-1)",
+      "threshold_placeholder": "Не установлено",
       "threshold_too_large_or_small": "Порог не может быть больше 1 или меньше 0",
       "no_match": "Не найдено содержимого в базе знаний.",
       "threshold": "Порог соответствия"
diff --git a/src/renderer/src/i18n/locales/zh-cn.json b/src/renderer/src/i18n/locales/zh-cn.json
index 4370f645..bccc8b19 100644
--- a/src/renderer/src/i18n/locales/zh-cn.json
+++ b/src/renderer/src/i18n/locales/zh-cn.json
@@ -295,8 +295,8 @@
       "status_pending": "等待中",
       "status_processing": "处理中",
       "threshold": "匹配度阈值",
-      "threshold_tooltip": "用于衡量用户问题与知识库内容之间的相关性",
-      "threshold_placeholder": "默认值(0.0)",
+      "threshold_tooltip": "用于衡量用户问题与知识库内容之间的相关性（0-1）",
+      "threshold_placeholder": "未设置",
       "threshold_too_large_or_small": "阈值不能大于1或小于0",
       "title": "知识库",
       "url_added": "网址已添加",
@@ -773,4 +773,4 @@
       "title": "帮助文档"
     }
   }
-}
\ No newline at end of file
+}
diff --git a/src/renderer/src/i18n/locales/zh-tw.json b/src/renderer/src/i18n/locales/zh-tw.json
index 523c8e6c..2c6e97dd 100644
--- a/src/renderer/src/i18n/locales/zh-tw.json
+++ b/src/renderer/src/i18n/locales/zh-tw.json
@@ -297,8 +297,8 @@
       "url_added": "網址已添加",
       "url_placeholder": "請輸入網址, 多個網址用回車分隔",
       "urls": "網址",
-      "threshold_tooltip": "匹配度閾值",
-      "threshold_placeholder": "預設值(0.0)",
+      "threshold_tooltip": "用於衡量用戶問題與知識庫內容之間的相關性（0-1）",
+      "threshold_placeholder": "未設置",
       "threshold_too_large_or_small": "閾值不能大於1或小於0",
       "no_match": "未匹配到知識庫內容",
       "threshold": "匹配度閾值"
diff --git a/src/renderer/src/pages/knowledge/components/KnowledgeSettingsPopup.tsx b/src/renderer/src/pages/knowledge/components/KnowledgeSettingsPopup.tsx
index 8dc16e1d..3a1e2b18 100644
--- a/src/renderer/src/pages/knowledge/components/KnowledgeSettingsPopup.tsx
+++ b/src/renderer/src/pages/knowledge/components/KnowledgeSettingsPopup.tsx
@@ -68,7 +68,7 @@ const PopupContainer: React.FC<Props> = ({ base: _base, resolve }) => {
         documentCount: values.documentCount || DEFAULT_KNOWLEDGE_DOCUMENT_COUNT,
         chunkSize: values.chunkSize,
         chunkOverlap: values.chunkOverlap,
-        threshold: values.threshold
+        threshold: values.threshold ?? undefined
       }
       updateKnowledgeBase(newBase)
       setOpen(false)
@@ -191,7 +191,7 @@ const PopupContainer: React.FC<Props> = ({ base: _base, resolve }) => {
               }
             }
           ]}>
-          <Input placeholder={t('knowledge.threshold_placeholder')} />
+          <InputNumber placeholder={t('knowledge.threshold_placeholder')} step={0.1} style={{ width: '100%' }} />
         </Form.Item>
       </Form>
       <Alert message={t('knowledge.chunk_size_change_warning')} type="warning" showIcon icon={<WarningOutlined />} />