diff --git a/packkey/bm-index.html b/packkey/bm-index.html
index 76dc3d7..1aab8e7 100644
--- a/packkey/bm-index.html
+++ b/packkey/bm-index.html
@@ -296,6 +296,19 @@
                             window.location.replace("./homepage.html");
                         }, 300)
                     } else {
+                        // 倒计时
+                        let out_time = sessionStorage.getItem("key_expiration_time");
+                        if (out_time && Number(out_time) !== 0) {
+                            const cls = setInterval(() => {
+                                const new_out_time = pageOutTime(out_time);
+                                if (new_out_time) {
+                                    state.outTime = new_out_time;
+                                } else {
+                                    state.outTime = ['00', '00', '00'];
+                                    clearInterval(cls);
+                                }
+                            }, 1000);
+                        }
 
                         state.goodsName = res.data[0].entity.product_name;
                         state.type = res.data[0].type; // 1商品  2立减金  3红包 4组合商品  -> 兑换码类型