Abstract: In the laser application,sometimes it is needed that laser beams of different wavelengths act on the research object at the same time. The integration of laser beams is usually operated manually,and observed and defined by eyes,so that dependability is difficult to be guaranteed. Integration of laser beams under the computer control is to gather each bunch of laser beam signals to the computer and control the reflector to adjust the direction of laser beams.With such a system,the multi laser beams can be integrated effectirely in the practical application.