三线表填色时颜色无法充满整个格子，与边框线之间存在空白。

您好！不要用\toprule环境，全部用\hline环境： ```c \documentclass[fontset=none]{ctexart} \setCJKmainfont[BoldFont={FZHei-B01},ItalicFont={FZKai-Z03}]{FZShuSong-Z01} \setCJKsansfont{FZHei-B01} \usepackage[margin=2.5cm]{geometry} \usepackage{newtxtext} \usepackage{graphicx} \usepackage{booktabs,colortbl} \usepackage{xcolor} \begin{document} \begin{table}[htpb] \centering \caption{Variation of some parameters} \label{tab7} \begin{tabular}{c|cccccc} \hline \cellcolor{blue!20}$V$ & \cellcolor{blue!20}$A_1$ & \cellcolor{blue!20}$A_2$ & \cellcolor{blue!20}$T_2$ & \cellcolor{blue!20}$q_{m1}$ & \cellcolor{blue!20}$q_{m2}$ & \cellcolor{blue!20}$\Phi_q$ \\ \hline \cellcolor{blue!20}-15.00\% & -5.06\% & -9.31\% & -12.67\% & -2.67\% & -14.14\% & -5.80\% \\ \cellcolor{blue!20}-12.00\% &\cellcolor{red!10} -4.04\% & -7.43\% & -10.09\% & -2.13\% & -11.31\% & -4.63\% \\ \hline \end{tabular} \end{table} \end{document} ``` 最后结果是：  或者如果表头线和最后尾部线条你非要加粗的话可以查看（建议去下载比较完整）：https://www.latexstudio.net/index/details/index/mid/154.html 代码： ```c \documentclass[fontset=none]{ctexart} \setCJKmainfont[BoldFont={FZHei-B01},ItalicFont={FZKai-Z03}]{FZShuSong-Z01} \setCJKsansfont{FZHei-B01} \usepackage[margin=2.5cm]{geometry} \usepackage{newtxtext} \usepackage{graphicx} \usepackage{booktabs,colortbl} \usepackage{xcolor} \colorlet{tableheadcolor}{gray!25} % Table header colour = 25% gray \newcommand{\headcol}{\rowcolor{tableheadcolor}} % \colorlet{tablerowcolor}{gray!10} % Table row separator colour = 10% gray \newcommand{\rowcol}{\rowcolor{tablerowcolor}} % % Command \topline consists of a (slightly modified) \toprule followed by a \heavyrule rule of colour tableheadcolor (hence, 2 separate rules) \newcommand{\topline}{\arrayrulecolor{black}\specialrule{0.1em}{\abovetopsep}{0pt}% \arrayrulecolor{tableheadcolor}\specialrule{\belowrulesep}{0pt}{0pt}% \arrayrulecolor{black}} % Command \midline consists of 3 rules (top colour tableheadcolor, middle colour black, bottom colour white) \newcommand{\bottomlinec}{\arrayrulecolor{tablerowcolor}\specialrule{\aboverulesep}{0pt}{0pt}% \arrayrulecolor{black}\specialrule{\heavyrulewidth}{0pt}{\belowbottomsep}}% \colorlet{blcolor}{gray!80} \newcommand{\rowmidlineHR}{\arrayrulecolor{tableheadcolor} \specialrule{\aboverulesep}{0pt}{0pt}% \arrayrulecolor{black}\specialrule{\lightrulewidth}{0pt}{0pt}% \arrayrulecolor{tablerowcolor}\specialrule{\belowrulesep}{0pt}{0pt}% \arrayrulecolor{black}} % Command \rowmidlinewc consists of 3 rules % (top colour tableheadcolor, middle colour black, bottom colour tablerowcolor) \newcommand{\rowmidlineG}{\arrayrulecolor{tablerowcolor}% \specialrule{\aboverulesep}{0pt}{0pt}% \arrayrulecolor{blcolor}\specialrule{\lightrulewidth}{0pt}{0pt}% \arrayrulecolor{tablerowcolor}\specialrule{\belowrulesep}{0pt}{0pt}% \arrayrulecolor{black}} \begin{document} \large \begin{table} [htpb] \centering \centering \caption{Size and shape distribution for a sampled rock riprap} \label{tab:size_shape} \begin{tabular} { p{0.2\textwidth} p{0.15\textwidth} p{0.10 \textwidth} p{0.10 \textwidth} p{0.15 \textwidth} } \topline \headcol & Small & Medium & Large & Shape fraction \\ \rowmidlineHR % Head Rule \rowcol Compact & 10\% & 44\% & 7\% & 61\% \\ \rowcol Flat & 4\% & 10\% & 4\% & 18\% \\ \rowcol Elongated & 5\% & 12\% & 4\% & 21\% \\ \rowmidlineG % Gray midline \rowcol Size fraction & 19\% & 66\% & 15\% & 100\% \\ \bottomlinec \end{tabular} \end{table} \end{document} ``` 最后的效果是： 

那就不要填色了