diff --git a/chapters/notation.tex b/chapters/notation.tex
index e0e4a36..7b13a7a 100644
--- a/chapters/notation.tex
+++ b/chapters/notation.tex
@@ -1,27 +1,12 @@
 % !TeX root = ../main.tex
 
-\begin{notation}
-
-  \begin{notationlist}{2em}
-    \item[$\displaystyle a$] The number of angels per unit area
-    \item[$\displaystyle N$] The number of angels per needle point
-    \item[$\displaystyle A$] The area of the needle point
-    \item[$\displaystyle \sigma$] The total mass of angels per unit area
-    \item[$\displaystyle m$] The mass of one angel
-    \item[$\displaystyle \sum_{i=1}^n a_i$] The sum of $a_i$
-  \end{notationlist}
-
-\end{notation}
-
-
-
-% 也可以使用 nomencl 宏包
-
-% \printnomenclature
-
-% \nomenclature{$\displaystyle a$}{The number of angels per unit are}
-% \nomenclature{$\displaystyle N$}{The number of angels per needle point}
-% \nomenclature{$\displaystyle A$}{The area of the needle point}
-% \nomenclature{$\displaystyle \sigma$}{The total mass of angels per unit area}
-% \nomenclature{$\displaystyle m$}{The mass of one angel}
-% \nomenclature{$\displaystyle \sum_{i=1}^n a_i$}{The sum of $a_i$}
+\printnomenclature
+
+\nomenclature[P]{\(c\)}{Speed of light in a vacuum}
+\nomenclature[P]{\(h\)}{Planck constant}
+\nomenclature[P]{\(G\)}{Gravitational constant}
+\nomenclature[N]{\(\mathbb{R}\)}{Real numbers}
+\nomenclature[N]{\(\mathbb{C}\)}{Complex numbers}
+\nomenclature[N]{\(\mathbb{H}\)}{Quaternions}
+\nomenclature[O]{\(V\)}{Constant volume}
+\nomenclature[O]{\(\rho\)}{Friction index}
diff --git a/ustcsetup.tex b/ustcsetup.tex
index 0ee1b6b..fd637a5 100644
--- a/ustcsetup.tex
+++ b/ustcsetup.tex
@@ -73,6 +73,17 @@
 % 配置图片的默认目录
 \graphicspath{{figures/}}
 
+\usepackage{nomencl}
+\makenomenclature
+
+\usepackage{etoolbox}
+\renewcommand\nomgroup[1]{%
+  \item[\bfseries
+  \ifstrequal{#1}{P}{Physics constants}{%
+  \ifstrequal{#1}{N}{Number sets}{%
+  \ifstrequal{#1}{O}{Other symbols}{}}}%
+]}
+
 % 数学命令
 \makeatletter
 \newcommand\dif{%  % 微分符号