diff --git a/packages/field/src/components/Second/index.tsx b/packages/field/src/components/Second/index.tsx
index 2cbef7dcfabf..3027b665a323 100644
--- a/packages/field/src/components/Second/index.tsx
+++ b/packages/field/src/components/Second/index.tsx
@@ -18,16 +18,17 @@ export type FieldDigitProps = {
  * @returns {string}
  */
 export function formatSecond(result: number) {
+  let newResult = result;
   let formatText = '';
   let past = false;
-  if (result < 0) {
-    result = -result;
+  if (newResult < 0) {
+    newResult = -newResult;
     past = true;
   }
-  const d = Math.floor(result / (3600 * 24));
-  const h = Math.floor((result / 3600) % 24);
-  const m = Math.floor((result / 60) % 60);
-  const s = Math.floor(result % 60);
+  const d = Math.floor(newResult / (3600 * 24));
+  const h = Math.floor((newResult / 3600) % 24);
+  const m = Math.floor((newResult / 60) % 60);
+  const s = Math.floor(newResult % 60);
   formatText = `${s}秒`;
   if (m > 0) {
     formatText = `${m}分钟${formatText}`;