diff --git a/yudao-module-llm/yudao-module-llm-biz/src/main/java/cn/iocoder/yudao/module/llm/utils/DataProcessUtil.java b/yudao-module-llm/yudao-module-llm-biz/src/main/java/cn/iocoder/yudao/module/llm/utils/DataProcessUtil.java
index 412fffb4d..1509ad7de 100644
--- a/yudao-module-llm/yudao-module-llm-biz/src/main/java/cn/iocoder/yudao/module/llm/utils/DataProcessUtil.java
+++ b/yudao-module-llm/yudao-module-llm-biz/src/main/java/cn/iocoder/yudao/module/llm/utils/DataProcessUtil.java
@@ -533,6 +533,11 @@ public class DataProcessUtil {
      */
     private static final String DOMESTIC_PHONE_REGEX = "(\\d{4}-|\\d{3}-)?(\\d{8}|\\d{7})";
 
+    /**
+     * 电话号码（400）的正则表达式
+     */
+    private static final String PHONE_REGEX = "400(-\\d{3,4}){2}|^800(-\\d{3,4}){2}";
+
     /**
      * 信用卡号的正则表达式
      */
@@ -546,6 +551,7 @@ public class DataProcessUtil {
     // 编译正则表达式为Pattern对象
     private static final Pattern MOBILE_PATTERN = Pattern.compile(MOBILE_REGEX);
     private static final Pattern DOMESTIC_PHONE_PATTERN = Pattern.compile(DOMESTIC_PHONE_REGEX);
+    private static final   Pattern PHONE_PATTERN = Pattern.compile(PHONE_REGEX);
     private static final Pattern CREDIT_CARD_PATTERN = Pattern.compile(CREDIT_CARD_REGEX);
     private static final Pattern HASH_PATTERN = Pattern.compile(HASH_REGEX);
 
@@ -609,6 +615,10 @@ public class DataProcessUtil {
         Matcher domesticPhoneMatcher = DOMESTIC_PHONE_PATTERN.matcher(text);
         text = domesticPhoneMatcher.replaceAll("");
 
+        // 电话号码（400）的正则表达式
+        Matcher phoneMatcher = PHONE_PATTERN.matcher(text);
+        text = phoneMatcher.replaceAll("");
+
         return text;
     }