diff --git a/iOS/Pod/Classes/Shader/DoricFlowLayoutNode.m b/iOS/Pod/Classes/Shader/DoricFlowLayoutNode.m
index b6258613..211b89e2 100644
--- a/iOS/Pod/Classes/Shader/DoricFlowLayoutNode.m
+++ b/iOS/Pod/Classes/Shader/DoricFlowLayoutNode.m
@@ -96,8 +96,10 @@ - (UICollectionViewLayoutAttributes *)layoutAttributesForItemAtIndexPath:(NSInde
     CGFloat width = (self.collectionView.width - self.columnSpace * (self.columnCount - 1)) / self.columnCount;
     CGFloat height = [self.delegate doricFlowLayoutItemHeightAtIndexPath:indexPath];
     CGFloat x = (width + self.columnSpace) * [minYOfColumn integerValue];
-    CGFloat y = self.rowSpace + [self.columnHeightInfo[minYOfColumn] floatValue];
-
+    CGFloat y = [self.columnHeightInfo[minYOfColumn] floatValue];
+    if (y > 0) {
+        y += self.rowSpace;
+    }
     self.columnHeightInfo[minYOfColumn] = @(y + height);
 
     UICollectionViewLayoutAttributes *attrs = [UICollectionViewLayoutAttributes layoutAttributesForCellWithIndexPath:indexPath];