Automatic pruning machine is the important equipment for artificial forest pruning thinning replaced the artificial work to do the tree pruning and training. Taking the automatic pruning machine as the control object, a wireless remote control system, which is composed of the Complex Programmable Logic Device (CPLD) and a wireless data transmission module, is designed. The receiving module receives the control command, then CPLD control outputs pulse width modulation signal to drive the two servos, ensuring that the pruning machine works in the desired state. The CPLD chip used in the design is Altera Company's Zero power chip EPM240ZM100, and the receiving module used in the design is the low-power CZS-7B. The circuit has the advantages of simple structure, low power consumption. And after the actual measurement, it is found that the control system of the normal operating current is only 50mA.