diff --git a/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs b/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs
index 38afa76d9..81afc0085 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs
@@ -154,7 +154,7 @@ namespace SqlSugar
                     {
                         parameterName = parameterName.Replace("]", "_");
                     }
-                    if (parameterName.Contains(this.SqlTranslationLeft))
+                    if (!string.IsNullOrEmpty(this.SqlTranslationLeft)&&parameterName.Contains(this.SqlTranslationLeft))
                     {
                         parameterName = parameterName.Replace(this.SqlTranslationLeft, "_");
                     }
diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs
index 38afa76d9..81afc0085 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs
@@ -154,7 +154,7 @@ namespace SqlSugar
                     {
                         parameterName = parameterName.Replace("]", "_");
                     }
-                    if (parameterName.Contains(this.SqlTranslationLeft))
+                    if (!string.IsNullOrEmpty(this.SqlTranslationLeft)&&parameterName.Contains(this.SqlTranslationLeft))
                     {
                         parameterName = parameterName.Replace(this.SqlTranslationLeft, "_");
                     }