diff --git a/doc/example/thesis.tex b/doc/example/thesis.tex
index 368e8d6..7c1b6bd 100644
--- a/doc/example/thesis.tex
+++ b/doc/example/thesis.tex
@@ -27,7 +27,8 @@
 
 % 设定文档的基本信息。
 \pkuthssinfo{
-	cthesisname = {博士研究生学位论文}, ethesisname = {Doctor Thesis},
+	cthesisname = {博士学位论文}, ethesisname = {Doctor Thesis},
+	thesiscover = {博士研究生学位论文},
 	ctitle = {测试文档},
 	etitle = {Test Document},
 	cauthor = {某某}, eauthor = {Test}, date = {某年某月},
diff --git a/doc/readme/chap/pkuthss-chap2.tex b/doc/readme/chap/pkuthss-chap2.tex
index a51d5e5..00b3ee1 100644
--- a/doc/readme/chap/pkuthss-chap2.tex
+++ b/doc/readme/chap/pkuthss-chap2.tex
@@ -195,16 +195,20 @@
 	\item \texttt{\bfseries\string\euniversity}：大学的西文名。
 	\item \texttt{\bfseries\string\cthesisname}：论文类别的中文名。
 	\item \texttt{\bfseries\string\ethesisname}：论文类别的西文名。
+	\item \texttt{\bfseries\string\thesiscover}：封面显示的论文类别\footnote{%
+		出于兼容性的考虑，如果 \texttt{\string\thesiscover} 为空，
+		那么封面将显示 \texttt{\string\cthesisname}。%
+	}。
 	\item \texttt{\bfseries\string\cabstractname}：摘要的中文标题。
 	\item \texttt{\bfseries\string\eabstractname}：摘要的西文标题。
 \end{itemize}
 
-例如，
-如果要设定论文的类别为“本科生毕业论文”（“Undergraduate Thesis”），
-则可以使用以下命令：
+例如，如果要设定论文的类别为“博士学位论文”（“Doctor Thesis”），
+但封面要显示“博士研究生学位论文”，则可以使用以下命令：
 \begin{Verbatim}
-\renewcommand{\cthesisname}{本科生毕业论文}
-\renewcommand{\ethesisname}{Undergraduate Thesis}
+\renewcommand{\cthesisname}{博士学位论文}
+\renewcommand{\ethesisname}{Doctor Thesis}
+\renewcommand{\thesiscover}{博士研究生学位论文}
 \end{Verbatim}
 
 \subsection{以“key = value”格式设置文档信息}
diff --git a/tex/pkuthss-gbk.def b/tex/pkuthss-gbk.def
index caf9986..2e80141 100644
--- a/tex/pkuthss-gbk.def
+++ b/tex/pkuthss-gbk.def
@@ -1,7 +1,7 @@
 % Peking University dissertation document class
 %
 % Copyright (c) 2008-2009 solvethis
-% Copyright (c) 2010-2013,2015 Casper Ti. Vector
+% Copyright (c) 2010-2013,2015,2021 Casper Ti. Vector
 %
 % This work may be distributed and/or modified under the conditions of the
 % LaTeX Project Public License, either version 1.3 of this license or (at
@@ -39,8 +39,9 @@
 \def\titlepagename{����}
 \def\cuniversity{������ѧ}
 \def\euniversity{Peking University}
-\def\cthesisname{��ʿ�о���ѧλ����}
+\def\cthesisname{��ʿѧλ����}
 \def\ethesisname{Doctor Thesis}
+\def\thesiscover{}
 \def\cabstractname{ժҪ}
 \def\eabstractname{ABSTRACT}
 
diff --git a/tex/pkuthss-utf8.def b/tex/pkuthss-utf8.def
index a5f2722..54a5e24 100644
--- a/tex/pkuthss-utf8.def
+++ b/tex/pkuthss-utf8.def
@@ -1,7 +1,7 @@
 % Peking University dissertation document class
 %
 % Copyright (c) 2008-2009 solvethis
-% Copyright (c) 2010-2013,2015 Casper Ti. Vector
+% Copyright (c) 2010-2013,2015,2021 Casper Ti. Vector
 %
 % This work may be distributed and/or modified under the conditions of the
 % LaTeX Project Public License, either version 1.3 of this license or (at
@@ -39,8 +39,9 @@
 \def\titlepagename{封面}
 \def\cuniversity{北京大学}
 \def\euniversity{Peking University}
-\def\cthesisname{博士研究生学位论文}
+\def\cthesisname{博士学位论文}
 \def\ethesisname{Doctor Thesis}
+\def\thesiscover{}
 \def\cabstractname{摘要}
 \def\eabstractname{ABSTRACT}
 
diff --git a/tex/pkuthss.cls b/tex/pkuthss.cls
index af3ec67..3c3550c 100644
--- a/tex/pkuthss.cls
+++ b/tex/pkuthss.cls
@@ -239,6 +239,7 @@
 \thss@int@infoitemb{euniversity}
 \thss@int@infoitemb{cthesisname}
 \thss@int@infoitemb{ethesisname}
+\thss@int@infoitemb{thesiscover}
 \thss@int@infoitemb{cabstractname}
 \thss@int@infoitemb{eabstractname}
 % Set up document information using the `key = value' grammar.
@@ -350,7 +351,7 @@
 			\zihao{1}%
 			\includegraphics[height = 2.4em]{pkulogo}\hspace{0.4em}%
 			\raisebox{0.4em}{\includegraphics[height = 1.6em]{pkuword}}\\[0.8em]
-			{\bfseries{\cthesisname}}%
+			{\bfseries\ifx\thesiscover\empty{\cthesisname}\else{\thesiscover}\fi}%
 		}
 		\vfill
 		% Title of the thesis.