使用pgfplots宏包的fillbetween库也许是一个办法。 一个来自[https://tex.stackexchange.com/questions/367668/strange-fill-between-behavior](https://tex.stackexchange.com/questions/367668/strange-fill-between-behavior "https://tex.stackexchange.com/questions/367668/strange-fill-between-behavior")的例子如下： ```tex \documentclass{standalone} \usepackage{tikz,pgfplots} \usepgfplotslibrary{fillbetween} \pgfplotsset{compat=1.3} \begin{document} \begin{tikzpicture} \begin{axis}[ xmin=-2,xmax=2, ymin=0,ymax=4, height = 6cm, minor tick num=1, axis lines=center, axis line style=<-> ] \addplot[name path=G,green,domain={-2:2}] {x^2}; \addplot[name path=F,blue,domain={-2:2}] {-x^2+2}; % \addplot[color=blue!50]fill between[of=G and F, split, clip={domain=-1:1}]; \tikzfillbetween [of=F and G,split,every even segment/.style={white!1}] {red!50}; \end{axis} \end{tikzpicture} \end{document} ``` 另一个来自[https://tex.stackexchange.com/questions/7914/fill-between-two-curves-in-pgfplots](https://tex.stackexchange.com/questions/7914/fill-between-two-curves-in-pgfplots "https://tex.stackexchange.com/questions/7914/fill-between-two-curves-in-pgfplots")的例子为： ```tex \documentclass{standalone} \usepackage{pgfplots} \pgfplotsset{compat=1.10} \usepgfplotslibrary{fillbetween} \begin{document} \begin{tikzpicture} \begin{axis} \addplot[name path=A,blue,mark=*,line width=2pt] table { 0 2 0.5 -1 1 3 }; \addplot[name path=B,orange,mark=*,line width=2pt] coordinates {(0,0) (1,1)}; \addplot[gray!40] fill between[of=A and B]; \end{axis} \end{tikzpicture} \end{document} ``` 可以将函数改为需要的函数，希望对解决问题有用。 可在命令行使用`texdoc pgfplots`查看其使用说明。