In the system of ship-borne laser communication,the laser has an important influence on improving communication quality.Using the model of laser beam intensity distribution and the 1.06 μm laser transmission characteristics in the atmosphere,has studied the influence degree of the atmospheric visibility on the beam intensity distribution in far-field.The result indicated:Without considering the influence of atmospheric turbulence,the visibility is higher,the beam intensity attenuation is smaller;Under the condition that only considered the atmospheric turbulence influence,wave length of transmission laser and refractive index of atmospheric structure constant have an important influence on beam intensity distribution.