diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
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+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc.
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+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..489b942
--- /dev/null
+++ b/README.md
@@ -0,0 +1,9 @@
+# `pkupcl` 文档类
+
+本文档类用于北京大学物理化学实验课程的实验报告,以 GPLv3 协议发布。
+
+本文档类需要用 `xelatex` 引擎编译。对于不含参考文献的文章,用 `xelatex` 编译两次即可。
+
+本文档类依赖于 `geometry`、`graphicx`、`booktabs`、`titlesec`、`mhchem`、`enumitem`、`siunitx` 和 `fancyhdr` 宏包,依赖于 `SimSun`(宋体)、`SimHei`(黑体)、`FangSong`(仿宋)、`Times New Roman`、`Arial` 和 `Monaco` 字体,请在编译前安装。
+
+使用方法详见 `example.tex`。
diff --git a/example.pdf b/example.pdf
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diff --git a/example.tex b/example.tex
new file mode 100644
index 0000000..3db1214
--- /dev/null
+++ b/example.tex
@@ -0,0 +1,71 @@
+\documentclass{pkupcl}
+\title{某物理量的测定}
+\author{张三}
+\id{1800000000}
+\group{第1组1号}
+\date{2020 年 1 月 1 日}
+\temperature{20.0}
+\pressure{100.0}
+\abstract{本实验测定了某物理量。}
+\keyword{甲\quad 乙\quad 丙\quad 丁}
+\begin{document}
+\makecover
+\section{引言}
+
+一些引言。
+
+\section{方法}
+
+\subsection{仪器和试剂}
+
+\subsubsection{试剂}
+
+\ce{H2O}。
+
+\subsubsection{仪器}
+
+\subsection{实验内容}
+
+\begin{enumerate}
+ \item ……;
+ \item ……。
+\end{enumerate}
+
+\section{结果与讨论}
+
+\subsection{主要结果 1 及其讨论}
+
+数据如表 1 所示。
+
+\begin{table}[!ht]
+\centering
+\caption{表格}
+\begin{tabular}{cc}
+\toprule
+表头 A & 表头 B \\ \midrule
+1 & 2 \\
+3 & 4 \\ \bottomrule
+\end{tabular}
+\end{table}
+
+\subsection{主要结果 2 及其讨论}
+
+图片如图 1 所示。
+
+\begin{figure}[!ht]
+\begin{center}
+\includegraphics[width=0.7\textwidth]{logo.png}
+\caption{图片}
+\end{center}
+\end{figure}
+
+\section{实验结论}
+
+\section*{参考文献}
+
+\begin{enumerate}[label={[\arabic*]}]
+ \item 北京大学化学学院物理化学实验教研组,物理化学实验(第4版),北京大学出版社,2002.
+ \item 松鼠,Chem \& Coding | 用LaTeX完成物化实验报告(2) 封面的制作,知乎,2017.
+\end{enumerate}
+
+\end{document}
diff --git a/logo.png b/logo.png
new file mode 100644
index 0000000..7936317
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diff --git a/pkupcl.cls b/pkupcl.cls
new file mode 100644
index 0000000..57b6fbb
--- /dev/null
+++ b/pkupcl.cls
@@ -0,0 +1,100 @@
+\ProvidesClass{pkupcl}
+
+% 加粗图注、表注的序号
+\LoadClass[zihao=-4]{ctexart}
+\ctexset{
+ figurename=\textbf{图},
+ tablename=\textbf{表}
+}
+
+% 宏包
+\RequirePackage[hmargin=3cm,vmargin=4cm]{geometry}
+\RequirePackage{graphicx}
+\RequirePackage{booktabs}
+\RequirePackage{titlesec}
+\RequirePackage[version=4]{mhchem}
+\RequirePackage{enumitem}
+
+% 带单位的物理量
+\RequirePackage{siunitx}
+\sisetup{detect-family}
+
+% 页眉页脚
+\RequirePackage{fancyhdr}
+\pagestyle{fancy}
+\lhead{\sffamily \footnotesize 物理化学实验}
+\chead{\sffamily \footnotesize \@title}
+\rhead{}
+\lfoot{}
+\cfoot{}
+\rfoot{}
+
+% 字体
+\setmainfont{Times New Roman}
+\setsansfont{Arial}
+\setmonofont{Monaco}
+\setCJKmainfont[AutoFakeBold=3]{SimSun}
+\setCJKsansfont[AutoFakeBold=3]{SimHei}
+\setCJKmonofont[AutoFakeBold=3]{FangSong}
+
+% 各级标题样式
+\titleformat{\section}[block]{\bfseries\sffamily}{\textsf{\arabic{section}}}{1em}{}[]
+\titleformat{\subsection}[block]{\bfseries}{\textsf{\arabic{section}.\arabic{subsection}}}{1em}{}[]
+\titleformat{\subsubsection}[block]{\ttfamily}{\textsf{\arabic{section}.\arabic{subsection}.\alph{subsubsection}}}{1em}{}[]
+
+% 文档元信息
+\newcommand{\id}[1]{\def\@id{#1}}
+\newcommand{\group}[1]{\def\@group{#1}}
+\newcommand{\temperature}[1]{\def\@temperature{#1}}
+\newcommand{\pressure}[1]{\def\@pressure{#1}}
+\renewcommand{\abstract}[1]{\def\@abstract{#1}}
+\newcommand{\keyword}[1]{\def\@keyword{#1}}
+
+% 制作封面
+\newcommand{\makecover}{
+ \begin{figure}[!ht]
+ \centering
+ \includegraphics[width=0.7\linewidth]{logo}
+ \end{figure}
+
+ \begin{center}
+ \sffamily
+ \zihao{-0} 物理化学实验报告
+ \end{center}
+
+ \vspace*{1cm}
+
+ \begin{table}[!ht]
+ \sffamily
+ \centering
+ \begin{huge}
+ \begin{tabular}{p{4cm} p{8cm}<{\centering}}
+ 题目: & \@title \\ \cline{2-2}
+ \end{tabular}
+ \end{huge}
+ \end{table}
+
+ \vspace*{0.5cm}
+
+ \begin{table}[!ht]
+ \sffamily
+ \centering
+ \begin{large}
+ \begin{tabular}{p{3cm} p{7cm}<{\centering}}
+ 姓\qquad 名: & \@author \\ \cline{2-2}
+ 学\qquad 号: & \@id \\ \cline{2-2}
+ 组\qquad 别: & \@group \\ \cline{2-2}
+ 日\qquad 期: & \@date \\ \cline{2-2}
+ 室\qquad 温: & \SI{\@temperature}{^\circ C} \\ \cline{2-2}
+ 气\qquad 压: & \SI{\@pressure}{kPa} \\ \cline{2-2}
+ \end{tabular}
+ \end{large}
+ \end{table}
+
+ \rule{\textwidth}{0.3pt}
+
+ \paragraph*{摘要} \@abstract
+ \paragraph*{关键词} \@keyword
+
+ \newpage
+}