diff --git a/backend/src/main/java/io/metersphere/performance/controller/request/MetricQuery.java b/backend/src/main/java/io/metersphere/performance/controller/request/MetricQuery.java
index 49dda8162b..01c0693483 100644
--- a/backend/src/main/java/io/metersphere/performance/controller/request/MetricQuery.java
+++ b/backend/src/main/java/io/metersphere/performance/controller/request/MetricQuery.java
@@ -10,7 +10,7 @@ public class MetricQuery {
             // 指标名:promQL
             put("cpu", "100 - (avg by (instance) (irate(node_cpu_seconds_total{instance='%1$s', mode='idle'}[1m])) * 100)");
             put("disk", "100 - node_filesystem_free_bytes{instance='%1$s'} / node_filesystem_size_bytes{instance='%1$s'} * 100");
-            put("memory", "(node_memory_MemTotal_bytes{instance='%1$s'} - node_memory_MemFree_bytes{instance='%1$s'}) / node_memory_MemTotal_bytes{instance='%1$s'} * 100");
+            put("memory", "(node_memory_MemTotal_bytes{instance='%1$s'} - node_memory_MemAvailable_bytes{instance='%1$s'}) / node_memory_MemTotal_bytes{instance='%1$s'} * 100");
             put("netIn", "sum by (instance) (irate(node_network_receive_bytes_total{instance='%1$s',device!~'bond.*?|lo'}[1m])/1024)");
             put("netOut", "sum by (instance) (irate(node_network_transmit_bytes_total{instance='%1$s',device!~'bond.*?|lo'}[1m])/1024)");
         }};