diff --git a/apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/sampling/SamplingService.java b/apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/sampling/SamplingService.java
index e9cb7e288..99c06f9b1 100644
--- a/apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/sampling/SamplingService.java
+++ b/apm-sniffer/apm-agent-core/src/main/java/org/skywalking/apm/agent/core/sampling/SamplingService.java
@@ -40,9 +40,10 @@ public class SamplingService implements BootService {
         if (on) {
             if (rollingSeed % Config.Agent.SAMPLING_CYCLE != 0) {
                 segment.setSampled(false);
+                rollingSeed++;
+            }else{
                 this.rollingSeed = 1;
             }
-            rollingSeed++;
         }
     }