diff --git a/generatorRasterSlicesTools/SpacetyTIFFDataStretch2PNG_AC.py b/generatorRasterSlicesTools/SpacetyTIFFDataStretch2PNG_AC.py
index 72c8863..ee34e58 100644
--- a/generatorRasterSlicesTools/SpacetyTIFFDataStretch2PNG_AC.py
+++ b/generatorRasterSlicesTools/SpacetyTIFFDataStretch2PNG_AC.py
@@ -480,7 +480,9 @@ def stretchSliceProcess(infilepath, outfolder,portfilestr, strechmethod):
     slice_ID=0
     slice_ID=sliceShipDataset(rootname,im_data, src_im_data,im_Geotrans, im_proj, outfolder) # 舰船切片
     slice_ID=slice_ID+1
-    slice_ID=slicePortDataset(rootname,im_data, src_im_data,im_Geotrans, im_proj, outfolder,slice_ID,portfilestr)
+    if os.path.exists(portfilestr):
+        print("存在港口文件")
+        slice_ID=slicePortDataset(rootname,im_data, src_im_data,im_Geotrans, im_proj, outfolder,slice_ID,portfilestr)
     # slice_ID=sliceLabelPortDataset(rootname,im_data, src_im_data,im_Geotrans, im_proj, outfolder,slice_ID,portfilestr) # 港口拉伸
     print("图像切片与拉伸完成")
     pass