\tikzstyle{num} = [minimum width = 0.6cm,minimum height = 0.6cm,draw,fill=green!10]
\tikzstyle{pad} = [minimum width = 0.6cm,minimum height = 0.6cm,draw,fill=blue!10]
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%\fill (4.55,1.5) circle (2pt);
\node [] at (4.55,1.5) {*};

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\node[num] at (6.1,0.9){1};
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\draw (7.55,1.5)node{$=$};

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\node[num] at (9,0){1};
\node[num] at (9.6,0){2};
\node[num] at (10.2,0){8};
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\node[num] at (11.4,0){4};

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\node[minimum width = 0.6cm,minimum height = 0.6cm,draw=purple!40,line width=0.08cm,fill=purple!40,fill opacity=0.4] at (8.4,3) {0};
\node[minimum width = 0.6cm,minimum height = 0.6cm,draw=orange!40,line width=0.08cm,fill=orange!40,fill opacity=0.4] at (9,2.4) {1};

%\draw (1.5,-1.5)node{\small{输入：8$\times$8（填充后）}};
%\draw (5.7,-1.5)node{\small{卷积核：3$\times$3}};
%\draw (10,-1.5)node{\small{输出：6$\times$6}};
\node[] (in) at (1.5,-1.5) {\small{输入：8$\times$8（填充后）}};
\node[] at (6,-1.5) {\small{卷积核：3$\times$3}};
\node[] (out) at (10,-1.5) {\small{输出：6$\times$6}};

%\node[font=\footnotesize,dashed,draw=teal,very thick,fill=green!5,align=center] at ([yshift=4cm,xshift=1.8cm]out.east) {*\ \ ：表示\\卷积计算};
\node[] at ([yshift=-0.3cm,xshift=-2.3cm]in.east) {\ \ \ \ \ };
\end{tikzpicture}