diff --git a/server/model/monitor.js b/server/model/monitor.js
index bafc0d2d..628f17a6 100644
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@@ -477,6 +477,12 @@ class Monitor extends BeanModel {
     stop() {
         clearTimeout(this.heartbeatInterval);
         this.isStop = true;
+
+        this.prometheus().remove();
+    }
+
+    prometheus() {
+        return new Prometheus(this);
     }
 
     /**
diff --git a/server/prometheus.js b/server/prometheus.js
index f91b0a13..86ad381b 100644
--- a/server/prometheus.js
+++ b/server/prometheus.js
@@ -86,6 +86,16 @@ class Prometheus {
         }
     }
 
+    remove() {
+        try {
+            monitor_cert_days_remaining.remove(this.monitorLabelValues);
+            monitor_cert_is_valid.remove(this.monitorLabelValues);
+            monitor_response_time.remove(this.monitorLabelValues);
+            monitor_status.remove(this.monitorLabelValues);
+        } catch (e) {
+            console.error(e);
+        }
+    }
 }
 
 module.exports = {
diff --git a/server/server.js b/server/server.js
index 9a5e1028..f3e8db0f 100644
--- a/server/server.js
+++ b/server/server.js
@@ -579,6 +579,9 @@ exports.entryPage = "dashboard";
                     throw new Error("Permission denied.");
                 }
 
+                // Reset Prometheus labels
+                monitorList[monitor.id]?.prometheus()?.remove();
+
                 bean.name = monitor.name;
                 bean.type = monitor.type;
                 bean.url = monitor.url;