diff --git a/HybirdFrameworkCore/Utils/BitUtls.cs b/HybirdFrameworkCore/Utils/BitUtls.cs
index 74e8991..3207533 100644
--- a/HybirdFrameworkCore/Utils/BitUtls.cs
+++ b/HybirdFrameworkCore/Utils/BitUtls.cs
@@ -53,7 +53,7 @@ public static class BitUtls
 
         if (propertyType == STRING)
         {
-            return Convert.ChangeType(BytesToHexStr(bytes, start, length), propertyType);
+            return Convert.ChangeType(Encoding.ASCII.GetString(bytes, start, length/8), propertyType);
         }
 
         if (propertyType == BYTEARRAY)