diff --git a/deepdoc/parser/mineru_parser.py b/deepdoc/parser/mineru_parser.py
index 3d4c9f149..bb663de0d 100644
--- a/deepdoc/parser/mineru_parser.py
+++ b/deepdoc/parser/mineru_parser.py
@@ -434,7 +434,7 @@ class MinerUParser(RAGFlowPdfParser):
                     if not section.strip():
                         section = "FAILED TO PARSE TABLE"
                 case MinerUContentType.IMAGE:
-                    section = "".join(output["image_caption"]) + "\n" + "".join(output["image_footnote"])
+                    section = "".join(output.get(["image_caption"],[])) + "\n" + "".join(output.get(["image_footnote"],[]))
                 case MinerUContentType.EQUATION:
                     section = output["text"]
                 case MinerUContentType.CODE: