首先我們需要在文檔的開(kāi)頭使用\usepackage{threeparttable}包。

\begin{table*}
\label{table:number}
\centering
\caption{....}
\begin{threeparttable} % highlight !!!
\begin{tabular}{lc}
   \hline
   A & B \\
   \hline
A & B\tnote{*} \\
A\tnote{**} & B \\
   \hline
\end{tabular}

 \begin{tablenotes}
        \footnotesize
        \item[*] this is the ....  
        \item[**] my website is ... 
      \end{tablenotes}
    \end{threeparttable}

\end{table*}

Reference:
https://www.e-learn.cn/topic/2754169