diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/OneRangePartitionEvaluator.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/OneRangePartitionEvaluator.java
index 3e08404d0b..e6c2d92c8e 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/OneRangePartitionEvaluator.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/OneRangePartitionEvaluator.java
@@ -396,11 +396,12 @@ public class OneRangePartitionEvaluator
         if (inPredicate.getCompareExpr() instanceof Slot
                 && inPredicate.getOptions().stream().allMatch(Literal.class::isInstance)) {
             Slot slot = (Slot) inPredicate.getCompareExpr();
-            ColumnRange unionLiteralRange = inPredicate.getOptions()
-                    .stream()
-                    .map(Literal.class::cast)
-                    .map(ColumnRange::singleton)
-                    .reduce(ColumnRange.empty(), ColumnRange::union);
+            ColumnRange unionLiteralRange = ColumnRange.empty();
+            ColumnRange slotRange = result.childrenResult.get(0).columnRanges.get(slot);
+            for (Expression expr : inPredicate.getOptions()) {
+                unionLiteralRange = unionLiteralRange.union(
+                        slotRange.intersect(ColumnRange.singleton((Literal) expr)));
+            }
             Map<Slot, ColumnRange> slotRanges = result.childrenResult.get(0).columnRanges;
             result = intersectSlotRange(result, slotRanges, slot, unionLiteralRange);
         }
diff --git a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/PartitionPruner.java b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/PartitionPruner.java
index cb4137ba5b..6089cf31a6 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/PartitionPruner.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/nereids/rules/expression/rules/PartitionPruner.java
@@ -113,6 +113,7 @@ public class PartitionPruner extends DefaultExpressionRewriter<Void> {
                         partitionTableType))
                 .collect(ImmutableList.toImmutableList());
 
+        partitionPredicate = OrToIn.INSTANCE.rewrite(partitionPredicate, null);
         PartitionPruner partitionPruner = new PartitionPruner(evaluators, partitionPredicate);
         //TODO: we keep default partition because it's too hard to prune it, we return false in canPrune().
         return partitionPruner.prune();