diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/processor/post/PlanPostProcessors.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/processor/post/PlanPostProcessors.java
index 787be605db132f5..9ae4c55608b765a 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/processor/post/PlanPostProcessors.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/processor/post/PlanPostProcessors.java
@@ -61,6 +61,7 @@ public List<PlanPostProcessor> getProcessors() {
         builder.add(new PushdownFilterThroughProject());
         builder.add(new MergeProjectPostProcessor());
         builder.add(new RecomputeLogicalPropertiesProcessor());
+        builder.add(new TopNScanOpt());
         // after generate rf, DO NOT replace PLAN NODE
         builder.add(new FragmentProcessor());
         if (!cascadesContext.getConnectContext().getSessionVariable().getRuntimeFilterMode()
@@ -71,7 +72,6 @@ public List<PlanPostProcessor> getProcessors() {
             }
         }
         builder.add(new Validator());
-        builder.add(new TopNScanOpt());
         return builder.build();
     }
 }