A wireless remote control pruning machine was developed for plantation forest. The new designed system mainly consists of two parts: a transmitting system in the form of a hand controller and a receiving system mounted on the frame of the machine to drive the mechanical system. The idea of using the complex programmable logic device (CPLD) to realize the digital signal processing for the control system was discussed in details. The structure of the electromechanical interface, the transmitting system and the receiving system were all presented in this paper. The point of technology for each part was analyzed. The whole remote control system has the advantages of simplicity, reliability of performance and function of anti-interference. It has been successfully used in the manufactured automatic pruning machine and the expected result is obtained.