Doppler radars have become one of the most important instruments for weather nowcasting,and for meso-scale weather research because of it's higher spatial and temporal resolutions. A dealing and graphic system for Doppler radar data was developed so as to providing a convenient tool for users. According to user's needs,many kinds of variables can be ploted and superimposed upon each other. Wind can be displayed such as contour,streamline and vector. It can be used very easily and conveniently.