Atmospheric coherence length is one of important parameters of atmospheric turbulence,atmospheric propagation of laser and phase adjustment of adaptive optics. Because whole-air or finitied length measurement of atmospheric coherence length uses stars,object in high altitude balloon and the like movement object as indices luminous source,the tracking ability is bad. So we devoloped a suit of automatism tracking system. All kinds of atmospheric coherence length automatism measurement can be realized. Atmospheric coherence length measurement ability is improved greatly.