diff --git a/tools/any2any.go b/tools/any2any.go
index 38d770c..59811c8 100644
--- a/tools/any2any.go
+++ b/tools/any2any.go
@@ -735,11 +735,7 @@ func Float64tostring(f float64) string {
 	if f == math.Trunc(f) {
 		return strconv.FormatInt(int64(f), 10)
 	}
-	// 用 15 位精度，然后用 TrimRight 去零
-	s := strconv.FormatFloat(f, 'f', 15, 64)
-	s = strings.TrimRight(s, "0")
-	s = strings.TrimRight(s, ".")
-	return s
+	return strconv.FormatFloat(f, 'f', -1, 64)
 }
 
 // StrToFloat64 字符串转 float 64