diff --git a/tool/diff.go b/tool/diff.go
index 1b47618..3d2783a 100644
--- a/tool/diff.go
+++ b/tool/diff.go
@@ -30,11 +30,23 @@ func (d *diff) Compare(fieldList []string, input wrapper.Map, storage wrapper.Ma
 	}
 	res := make(map[string]*define.DiffResult)
 	for _, itemField := range fieldList {
-		if compareFunc, exist := option.CustomDiffFuncTable[itemField]; exist && nil != compareFunc {
-			res[itemField] = compareFunc(itemField, input, storage, option)
-		} else {
-			res[itemField] = define.DefaultDiffFunc(itemField, input, storage, option)
-		}
+		res[itemField] = d.CompareSingle(itemField, input, storage, option)
 	}
 	return res
 }
+
+// CompareSingle 比较一个字段
+//
+// Author : go_developer@163.com<白茶清欢>
+//
+// Date : 15:57 2024/3/8
+func (d *diff) CompareSingle(field string, input wrapper.Map, storage wrapper.Map, option *define.DiffOption) *define.DiffResult {
+	if nil == option {
+		option = define.NewDiffOption()
+	}
+	if compareFunc, exist := option.CustomDiffFuncTable[field]; exist && nil != compareFunc {
+		return compareFunc(field, input, storage, option)
+	} else {
+		return define.DefaultDiffFunc(field, input, storage, option)
+	}
+}