最近要參加一個IEEE主辦的國際會議，使用中官網提供的Latex模板寫論文，當插入EPS格式的圖片時，提示錯誤：undefined control sequence \includegraphics。 說明Latex無法識別\includegraphics， 在前面的程式中加入\usepackage{graphicx}還是不行，偶然在一個國外網站發現解決方案，現總結於此：

找到前面的graphic related packages

% *** GRAPHICS RELATED PACKAGES ***
%
\ifCLASSINFOpdf
  
   <span style="color:#ff0000;">\usepackage[pdftex]{graphicx}</span>
  % declare the path(s) where your graphic files are
   <span style="color:#ff0000;">\graphicspath{{../pdf/}{../jpeg/}}</span>
  % and their extensions so you won't have to specify these with
  % every instance of \includegraphics
   <span style="color:#ff0000;">\DeclareGraphicsExtensions{.pdf,.jpeg,.png}</span>
\else
  % or other class option (dvipsone, dvipdf, if not using dvips). graphicx
  % will default to the driver specified in the system graphics.cfg if no
  % driver is specified.
  <span style="color:#ff0000;"> \usepackage[dvips]{graphicx}</span>
  % declare the path(s) where your graphic files are
   <span style="color:#ff0000;">\graphicspath{{../eps/}}</span>
  % and their extensions so you won't have to specify these with
  % every instance of \includegraphics
  % \DeclareGraphicsExtensions{.eps}
\fi
 

解決方法：把上圖中紅色的部分取消掉註釋，在執行就可以了。