diff --git a/backend/src/main/java/io/metersphere/performance/base/GranularityData.java b/backend/src/main/java/io/metersphere/performance/base/GranularityData.java
new file mode 100644
index 0000000000..07aa3de863
--- /dev/null
+++ b/backend/src/main/java/io/metersphere/performance/base/GranularityData.java
@@ -0,0 +1,39 @@
+package io.metersphere.performance.base;
+
+import lombok.Getter;
+import lombok.Setter;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class GranularityData {
+
+    public static List<Data> dataList = new ArrayList<>();
+
+    static {
+        dataList.add(new Data(0, 100, 1));
+        dataList.add(new Data(101, 500, 5));
+        dataList.add(new Data(501, 1000, 10));
+        dataList.add(new Data(1001, 3000, 30));
+        dataList.add(new Data(3001, 6000, 60));
+        dataList.add(new Data(6001, 30000, 300));
+        dataList.add(new Data(30001, 60000, 600));
+        dataList.add(new Data(60001, 180000, 1800));
+        dataList.add(new Data(180001, 360000, 3600));
+        dataList.add(new Data(360000, Integer.MAX_VALUE, 3600));
+    }
+
+    @Getter
+    @Setter
+    public static class Data {
+        private Integer start;
+        private Integer end;
+        private Integer granularity;
+
+        Data(Integer start, Integer end, Integer granularity) {
+            this.start = start;
+            this.end = end;
+            this.granularity = granularity;
+        }
+    }
+}
diff --git a/backend/src/main/java/io/metersphere/performance/service/MetricQueryService.java b/backend/src/main/java/io/metersphere/performance/service/MetricQueryService.java
index 74e60c75ef..fc4f536036 100644
--- a/backend/src/main/java/io/metersphere/performance/service/MetricQueryService.java
+++ b/backend/src/main/java/io/metersphere/performance/service/MetricQueryService.java
@@ -15,6 +15,7 @@ import io.metersphere.commons.exception.MSException;
 import io.metersphere.commons.utils.DateUtils;
 import io.metersphere.commons.utils.LogUtil;
 import io.metersphere.dto.NodeDTO;
+import io.metersphere.performance.base.GranularityData;
 import io.metersphere.performance.base.ReportTimeInfo;
 import io.metersphere.performance.controller.request.MetricDataRequest;
 import io.metersphere.performance.controller.request.MetricQuery;
@@ -57,13 +58,13 @@ public class MetricQueryService {
         List<MetricData> metricDataList = new ArrayList<>();
         long endTime = metricRequest.getEndTime();
         long startTime = metricRequest.getStartTime();
-        int step = metricRequest.getStep();
         long reliableEndTime;
         if (endTime > System.currentTimeMillis()) {
             reliableEndTime = System.currentTimeMillis();
         } else {
             reliableEndTime = endTime;
         }
+        int step = getGranularity(startTime, reliableEndTime);
 
         Optional.ofNullable(metricRequest.getMetricDataQueries()).ifPresent(metricDataQueries -> metricDataQueries.forEach(query -> {
             String promQL = query.getPromQL();
@@ -256,4 +257,21 @@ public class MetricQueryService {
 
         return result;
     }
+
+    private Integer getGranularity(long start, long end) {
+        Integer granularity = 15;
+        try {
+            int duration = (int) (end - start) / 1000;
+            Optional<GranularityData.Data> dataOptional = GranularityData.dataList.stream()
+                    .filter(data -> duration >= data.getStart() && duration <= data.getEnd())
+                    .findFirst();
+            if (dataOptional.isPresent()) {
+                GranularityData.Data data = dataOptional.get();
+                granularity = data.getGranularity();
+            }
+        } catch (Exception e) {
+            LogUtil.error(e.getMessage() ,e);
+        }
+        return granularity;
+    }
 }