Abstract: This paper introduces two types of real time systems developed for measuring laser beam and laser power,and for analysing the influence of atmosphere stochastic channel on laser transmission. One system is used for the realtime measurement and record of the laser facula，and another for the realtime measurement and record of the optical intensity. Lots of outfield experiments have been done and the experimental data have been recorded with the two systems. From the processing of the experimental data,some influence rules of atmosphere have been deduced.