diff --git a/ppstructure/docs/PP-Structurev2_introduction.md b/ppstructure/docs/PP-Structurev2_introduction.md
index 3d36aa0cf8faa1215e7afd1eaf111aa1333c9887..5719ca84f26ef1256989eaceaec2643dcaa43335 100644
--- a/ppstructure/docs/PP-Structurev2_introduction.md
+++ b/ppstructure/docs/PP-Structurev2_introduction.md
@@ -422,3 +422,5 @@ RE任务的可视化结果如下所示。
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+* [17] Xu Y, Lv T, Cui L, et al. XFUND: A Benchmark Dataset for Multilingual Visually Rich Form Understanding[C]//Findings of the Association for Computational Linguistics: ACL 2022. 2022: 3214-3224.
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