diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/join/InnerJoinLAsscomProject.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/join/InnerJoinLAsscomProject.java
index 4a64610fab..b48e429ccf 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/join/InnerJoinLAsscomProject.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/exploration/join/InnerJoinLAsscomProject.java
@@ -65,7 +65,7 @@ public class InnerJoinLAsscomProject extends OneExplorationRuleFactory {
                     GroupPlan a = bottomJoin.left();
                     GroupPlan b = bottomJoin.right();
                     GroupPlan c = topJoin.right();
-                    Set<Slot> cOutputSet = c.getOutputSet();
+                    Set<ExprId> cExprIdSet = c.getOutputExprIdSet();
 
                     /* ********** Split projects ********** */
                     Map<Boolean, List<NamedExpression>> map = JoinReorderUtils.splitProjection(projects, b);
@@ -95,15 +95,16 @@ public class InnerJoinLAsscomProject extends OneExplorationRuleFactory {
                     // Add all slots used by OnCondition when projects not empty.
                     Set<ExprId> aExprIdSet = JoinReorderUtils.combineProjectAndChildExprId(a, aProjects);
                     Map<Boolean, Set<Slot>> abOnUsedSlots = Stream.concat(
-                                    bottomJoin.getHashJoinConjuncts().stream(),
-                                    bottomJoin.getHashJoinConjuncts().stream())
+                                    newTopHashConjuncts.stream(),
+                                    newTopOtherConjuncts.stream())
                             .flatMap(onExpr -> onExpr.getInputSlots().stream())
+                            .filter(slot -> !cExprIdSet.contains(slot.getExprId()))
                             .collect(Collectors.partitioningBy(
                                     slot -> aExprIdSet.contains(slot.getExprId()), Collectors.toSet()));
                     JoinReorderUtils.addSlotsUsedByOn(abOnUsedSlots.get(true), aProjects);
                     JoinReorderUtils.addSlotsUsedByOn(abOnUsedSlots.get(false), bProjects);
 
-                    aProjects.addAll(cOutputSet);
+                    aProjects.addAll(c.getOutput());
 
                     /* ********** new Plan ********** */
                     LogicalJoin<Plan, Plan> newBottomJoin = topJoin.withConjunctsChildren(newBottomHashConjuncts,