Abstract: In order to improve the coding efficiency and the availability of frequency band in ultraviolet laser communication system, a technique is put forward, which integrates PPM（pulse position modulation）and Turbo code. This technique can improve the availability of frequency band, anti-jamming capability between codes, error correction and error bit rate. The coding formula of Turbo code is derived in PPM mode. The technique was simulated with Matlab software. The simulation result shows that this solution can reduce the bit error rate and improve the efficiency of the whole communication system.