参考下面的例子:https://tex.stackexchange.com/questions/151949/arrange-three-images
\documentclass[twocolumn]{article}
\usepackage{graphicx}
\usepackage{caption}
\usepackage{subcaption}
\usepackage{lipsum} % For dummy text only
\begin{document}
\begin{figure}[!t]
\begin{tabular}[b]{cc}
\begin{tabular}[b]{c}
\begin{subfigure}[b]{0.4\columnwidth}
\includegraphics[width=\textwidth]{A.png}
\caption{A.}
\label{fig:A}
\end{subfigure}\\
\begin{subfigure}[b]{0.4\columnwidth}
\includegraphics[width=\textwidth]{B.png}
\caption{B.}
\label{fig:B}
\end{subfigure}
\end{tabular}
&
\begin{subfigure}[b]{0.4\columnwidth}
\includegraphics[width=\textwidth]{C.png}
\caption{C.}
\label{fig:C}
\end{subfigure}
\end{tabular}
\label{fig:ABC}
\caption{A, B and C.}
\end{figure}
\lipsum[1-5]
\end{document}