diff --git a/scripts/build_pdf.sh b/scripts/build_pdf.sh
index 661d59340d5ff4eb53a6622a6f39a1b855d6d789..46a64ae387b63cfa487711efb8e161dadd8188f8 100755
--- a/scripts/build_pdf.sh
+++ b/scripts/build_pdf.sh
@@ -21,12 +21,19 @@ templateV2File=templates/eisvogel.tex
 MergeTocToolScript=scripts/merge_by_toc.py
 DockRootDir="product"
 dist="dist/pdf"
+# 构建全部文档
 build_all=yes
+# 构建 latex 文档
 build_tex=no
+# 只 构建 mtk 文档
 only_build_mtk=no
+# 只 构建 sca 文档
 only_build_sca=no
+# 只 构建 mvd 文档
 only_build_mvd=no
+# 只 构建 mogdb 文档
 only_build_mogdb=no
+# 只 构建 mogha～ 文档
 only_build_mogha=no