A.两个图片各有各自的图注和图标序号

\begin{figure}[htbp]
\begin{minipage}[t]{0.45\linewidth}
\centering
\includegraphics[height=4cm,width=4cm]{influenceOfRegression.eps}
\caption{fig111111}
\end{minipage}%
\begin{minipage}[t]{0.45\linewidth}
\centering
\includegraphics[height=4cm,width=4cm]{influenceOfRegression.eps}
\caption{fig222222}
\end{minipage}
\end{figure}

B.两个图片各有各自的图注，但只有一个图标序号

\begin{figure}[htbp]
\centering
\subfigure[Radial Velocity Method]{\includegraphics[height=4cm,width=4cm]{influenceOfRegression.eps}}
\subfigure[Moons of Jupiter]{\includegraphics[height=4cm,width=4cm]{influenceOfRegression.eps}}
\caption{ Demo }
\label{fig}
\end{figure}