问题：在撰写博士论文或者书的时候，每隔章节的图，tex文件如果都放到与main.tex（主文件）同一文件夹下，文件就是过多，如果把各个章节放在各自不同的目录下，就会简介很多，但是如何导入各个章节的tex文件就是一个问题了，这也是本文要回答的问题。

例子：

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

main.tex

partA.tex              %your header.tex

subfolder/chapter1.tex

subfolder/part1.tex    %your custom.tex

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%main.tex%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

documentclass{article}

usepackage{import}

usepackage{lipsum}

begin{document}

subimport*{subfolder/}{chapter1}     % 插入文件夹下的章节tex文件

end{document}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%subfolder/chapter1.tex%%%%%%%%%%%%%%%%%%%%%%%%%%%%

section{Chapter 1}

input{part1}%

input{../partA}   %doesn't worksubimport*{../}{partA}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%/subfolder/part1.tex%%%%%%%%%%%%%%%%%%%%%%%%%%%%
subsection{Part 1}

lipsum[1]

%partA.tex%%%%%%%%%%%%%%%%%%%%%%%%%%%%

subsection{Part A}

lipsum[2]

input{subfolder/part1}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

输出结果：

1 Chapter 1

1.1 Part 1

    text

1.2 Part A

    text

1.3 Part 1

    text