In this paper, we design a semiconductor nano laser driver for remote control, and test its output characteristics. The constant current drive circuit of semiconductor nano laser includes three modules: slow start module, constant current module and over-current protection module. The constant current mode is used to control the laser to ensure its output constant optical power. The whole circuit is powered by the slow start circuit, which belongs to the current series negative feedback circuit, and the positive input is connected with the sliding rheostat. The core of the temperature control circuit is MAX1 969 chip, whose control accuracy can reach 0.01℃. By testing the laser system, the results show that the laser threshold is about 18.5 mA, when the pump current is 149.5 mA, the output power of the pump laser is 54.8 mW. The laser has good temperature and current stability.