The Eclipse platform provides CDT plug-in for C/C++ program development, but for the embedded software cross debugging. CDT requires too much users to participate. We design a cross debugging program based on the Eclipse platform. It automatically configures parameters needed for debugging by means of seamless integrating a cross debugging plug-in to the Eclipse platform. It can make full use of extensibility of Eclipse platform to make the target machine information visible, and achieve automatic debugging purposes. Experiments show that the cross debugging program can simplify the user control, and improve the efficiency of cross debugging.