2楼: Originally posted by inhaul at 2013-01-31 15:15:01
\begin{figure}
  \centering
  \includegraphics{my1.jpg}
\end{figure}

宽度自己可以设置大小，上面的例子是5英寸，也可以用公制25mm

3楼: Originally posted by rockinuk at 2013-01-31 15:33:18
2 楼正解~

也可以

\begin{figure}
  \centering
   \scalebox{0.65}{\includegraphics{test.eps}} <=== 缩小成 65% 大小.
    \caption{This is a test.}
\normalsize
\end{figure}