（自用）专业排版套装：CTeX + TeXStudio

\documentclass[UTF8,landscape]{ctexart}%UTF8，ctexart中文支持，landscape横向版面
\usepackage{tikz}%画图
\usepackage{geometry}%页边距设置
\geometry{left=0.5cm,right=0.5cm,top=2.5cm,bottom=0.5cm}

\usepackage{fancyhdr}%页头页尾页码设置
\pagestyle{fancy}
\begin{document}
    \title{\textbf{《概率论与数理统计》学习图解}}%标题
    \author{DencChaohai}%作者
    \maketitle
    \newpage%重新开始一页
    \part{概率论}
    \section{逻辑关系图解}
    \begin{center}%图形居中
        \begin{tikzpicture}[line width=1pt,scale=0.6]%图形缩放0.6倍
        \tikzstyle{every node}=[scale=0.6]%文字缩放0.6倍

        %定义 \node(编号)at(位置)[属性]{内容}
        \node(xx)at(0,0)[draw,align=center]{现象};
        \node(qdxxx)at(2,2)[draw,align=center]{确定性现象};
        \node(sjxxx)at(2,-2)[draw,align=center]{随机性现象};
        \node(gc)at(4,-2+0.5){观察};
        \node(sy)at(6,-2)[draw,align=center]{试验};
        \node(jg)at(8,-2+0.5){结果};
        \node(ybd)at(10,-2)[draw,align=center]{样本点\\$\omega$};
        \node(dy)at(10+0.5,-4){单一};
        \node(jbsj)at(10,-6)[draw,align=center]{基本事件};
        \node(hs)at(10+0.5,-8){函数};
        \node(sjbl)at(10,-10)[draw,align=center]{随机变量\\$X=X(\omega)$};
        \node(sjxl)at(10,-14)[draw,align=center]{随机向量\\$\vec{X}=\{X_1,X_2,\dots\}$};
        \node(qt)at(12,-2+0.5){全体};
        \node(fh)at(12,-6+0.5){复合};
        \node(ybkj)at(14,-2)[draw,align=center]{样本空间\\$\Omega=\{\omega|\dots\}$};
        \node(zj)at(14+0.5,-4){子集};
        \node(sj)at(14,-6)[draw,align=center]{事件\\$A,B,\dots$};
        \node(cd)at(14+0.5,-8){测度};
        \node(gl)at(14,-10)[draw,align=center]{概率\\$P(A)$};
        \node(dj)at(16,-6+0.5){等价};
        \node(jh)at(18,-6)[draw,align=center]{集合};
        \node(fbhs)at(18,-10)[draw,align=center]{分布函数\\$F(x)=P\{X\leq x\}$};        

        %连线 \draw[箭头](始点)--(终点)

        \draw[->](xx)--(qdxxx);
        \draw[->](xx)--(sjxxx);
        \draw[->](sjxxx)--(sy);
        \draw[->](ybd)--(jbsj);
        \draw[->](sy)--(ybd);
        \draw[->](ybd)--(ybkj);
        \draw[->](jbsj)--(sjbl);
        \draw[->](ybkj)--(sj);
        \draw[->](sj)--(gl);
        \draw[->](jbsj)--(sj);
        \draw[->](sjbl)--(sjxl);
        \draw[->](sj)--(jh);
        \draw[->](sjbl)--(gl);
        \draw[->](gl)--(fbhs);    

        \end{tikzpicture}
    \end{center}
    \newpage
    \section{随机变量图解}
    \newpage
    \section{随机向量图解}
\end{document}

\documentclass[tikz]{standalone}
\usepackage{xcolor}
\usetikzlibrary{mindmap}
\definecolor{DeepSkyBlue4}{RGB}{0,104,139}
\begin{document}
\tikzstyle{level 2 concept}+=[sibling angle=40]
    \begin{tikzpicture}[scale=0.49, transform shape]
    \path[mindmap,concept color=black,text=white]
    node[concept] {Pure Mathematics} [clockwise from=45]
    child[concept color=DeepSkyBlue4]{
    node[concept] {Analysis} [clockwise from=180]
    child {
    node[concept] {Multivariate \& Vector Calculus}
    [clockwise from=120]
    child {node[concept] {ODEs}}}
    child { node[concept] {Functional Analysis}}
    child { node[concept] {Measure Theory}}
    child { node[concept] {Calculus of Variations}}
    child { node[concept] {Harmonic Analysis}}
    child { node[concept] {Complex Analysis}}
    child { node[concept] {Stochastic Analysis}}
    child { node[concept] {Geometric Analysis}
    [clockwise from=-40]
    child {node[concept] {PDEs}}}}
    child[concept color=black!50!green, grow=-40]{
    node[concept] {Combinatorics} [clockwise from=10]
    child {node[concept] {Enumerative}}
    child {node[concept] {Extremal}}
    child {node[concept] {Graph Theory}}}
    child[concept color=black!25!red, grow=-90]{
    node[concept] {Geometry} [clockwise from=-30]
    child {node[concept] {Convex Geometry}}
    child {node[concept] {Differential Geometry}}
    child {node[concept] {Manifolds}}
    child {node[concept,color=black!50!green!50!red,text=white] {Discrete Geometry}}
    child {
    node[concept] {Topology} [clockwise from=-150]
    child {node [concept,color=black!25!red!50!brown,text=white]
    {Algebraic Topology}}}}
    child[concept color=brown,grow=140]{
    node[concept] {Algebra} [counterclockwise from=70]
    child {node[concept] {Elementary}}
    child {node[concept] {Number Theory}}
    child {node[concept] {Abstract} [clockwise from=180]
    child {node[concept,color=red!25!brown,text=white] {Algebraic Geometry}}}
    child {node[concept] {Linear}}}
    node[extra concept,concept color=black] at (200:5) {Applied Mathematics}
    child[grow=145,concept color=black!50!yellow] {
    node[concept] {Probability} [clockwise from=180]
    child {node[concept] {Stochastic Processes}}}
    child[grow=175,concept color=black!50!yellow] {node[concept] {Statistics}}
    child[grow=205,concept color=black!50!yellow] {node[concept] {Numerical Analysis}}
    child[grow=235,concept color=black!50!yellow] {node[concept] {Symbolic Computation}};
    \end{tikzpicture}
\end{document}

• 综合

\documentclass{article}
\usepackage{tikz}
\begin{document}
    \begin{tikzpicture}
        \node{1}
        child{
            node{2}
            child{
                node{3}
                }
            child{
                node(4)at(4,4)[draw]{4}
                child{
                    node{5}
                }
            }
        };
    \end{tikzpicture}
\end{document}