\documentclass{article} \usepackage{pdfpages}%直接插入pdf文件页 \graphicspath{{egfigure/}{example/}} \begin{document} \includepdf[pages=-]{egfigure/tgbcitationms.pdf} \IfFileExists{egfigure/tngbcitationay.pdf} {\includepdf[pages=-]{egfigure/tngbcitationay.pdf}} {\includepdf[pages=-]{egfigure/tngbcitationaynew.pdf}} \includepdf[pages=-]{egfigure/tgbbiblioms.pdf} \end{document}