Abstract: This paper describes the design of a control system for 3 W1 wiggler in the Chinese High Energy Photon SourceTest Facility (HEPS-TF).The control system includes the superconducting power supply control system and the cryogenic monitor system.It is based on the Experimental Physics and Industrial Control System (EPICS) and the hardware core of the control system is a serial port server which normalizes the port to the standard RS232/485 serial port.StreamDevice has been used to develop the EPICS driver whose protocol is based on Modbus.High level applications are developed by Qt Creator embedded with EPICS Qt framework.At present, the control system has been basically completed and tested off-line.