Abstract: An automatic sorting control system for Cuiguan pear, according to its fruit weight, was designed with Weikong LEVI777A touching screen as man-machine interface, and Taida DVP12SA211T programmble controller as the control core, in order to reduce the labor cost and improve the sorting efficiency and accuracy. The system could run smoothly, operate simply, and with friendly man-machine interface. With the system, the Cuiguan pear was automatically separated, and the sorting accuracy and efficiency were effectively improved. This system could save labor cost, and obtain high research and social economy value.