Aiming at the polarized light effect of different environment bubble group is degree of polarizationand backscattering light intensity，the simulation model using Monte Carlo method is built. In the simulation pro.cess, the motion process of photo in the group of bubble is fully considered. The difference of the characteristics ofthe backward scattering light intensity and the degree of polarization are compared and analyzed when the polarizedlight incident into the water in different bubble radius, bubble density and the width of bubbles. The feasibility ofwater bubbles in laser incident polarization detection method used in optical communication detection field is veri.fied and the application importance in this area is presented.