diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/JoinEstimation.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/JoinEstimation.java
index a45d2c6175..228b6936a7 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/JoinEstimation.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/stats/JoinEstimation.java
@@ -279,10 +279,12 @@ public class JoinEstimation {
         } else if (joinType == JoinType.LEFT_OUTER_JOIN) {
             Statistics innerJoinStats = estimateInnerJoin(leftStats, rightStats, join);
             double rowCount = Math.max(leftStats.getRowCount(), innerJoinStats.getRowCount());
+            rowCount = Math.max(leftStats.getRowCount(), rowCount);
             return innerJoinStats.withRowCount(rowCount);
         } else if (joinType == JoinType.RIGHT_OUTER_JOIN) {
             Statistics innerJoinStats = estimateInnerJoin(leftStats, rightStats, join);
             double rowCount = Math.max(rightStats.getRowCount(), innerJoinStats.getRowCount());
+            rowCount = Math.max(rowCount, rightStats.getRowCount());
             return innerJoinStats.withRowCount(rowCount);
         } else if (joinType == JoinType.FULL_OUTER_JOIN) {
             Statistics innerJoinStats = estimateInnerJoin(leftStats, rightStats, join);