diff --git a/datacenter/bizService/F_UpdateRecord.cpp b/datacenter/bizService/F_UpdateRecord.cpp
index 32ef910..566253b 100644
--- a/datacenter/bizService/F_UpdateRecord.cpp
+++ b/datacenter/bizService/F_UpdateRecord.cpp
@@ -4,7 +4,7 @@
  * @version: 
  * @Date: 2025-02-25 11:02:37
  * @LastEditors: why
- * @LastEditTime: 2025-02-27 11:59:30
+ * @LastEditTime: 2025-02-27 14:13:01
  */
 #include <iostream>
 #include <chrono>
@@ -31,7 +31,7 @@ UpdateRecord::UpdateRecord(void){
     handpara = nullptr;
     initpara = nullptr;
 }
-void hexstr_to_str(void *dst, const void *src, int src_len)
+static void hexstr_to_str(void *dst, const void *src, int src_len)
 {
     int i;
     BYTE low, high, ch;
@@ -62,7 +62,7 @@ void hexstr_to_str(void *dst, const void *src, int src_len)
     }
 }
 
-void str_to_hexstr(void *dst, const void *src, int src_len)
+static void str_to_hexstr(void *dst, const void *src, int src_len)
 {
     int i;
     BYTE low, high, ch;
@@ -79,7 +79,7 @@ void str_to_hexstr(void *dst, const void *src, int src_len)
         *dst_ptr++ = str[low];
     }
 }
-int encode_blob(void *dst, int max_len, const void *src, int src_len)
+static int encode_blob(void *dst, int max_len, const void *src, int src_len)
 {
     int dst_len = 0;
     
@@ -93,7 +93,7 @@ int encode_blob(void *dst, int max_len, const void *src, int src_len)
     return dst_len;
 }
 
-int decode_blob(void *dst, int max_len, const void *src)
+static int decode_blob(void *dst, int max_len, const void *src)
 {
     // may be changed to base64 decode
     int src_len, dst_len = 0;