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The effect on operating distance by deviation between axis of emitting and receiving in turbulent atmosphere was analyzed in the paper, with the premise that the axis of emitting and sighting were parallel. First the model of operating distance with the deviation between axis of emitting and receiving was found. The facula center of emitting and the receiving was not coincidence but had displacement. So when calculating the laser reflectance power, the area of reflectance target was not the area of target, but the intersection parts of target, laser facula and the receiving field. Then the effect on laser facula by atmospheric turbulence was supplied. The laser facula was broken and the center was dispersion which would effect the operating distance. With the model of operating distance, the operating distance varying with the deviation angle between axis of emitting and receiving was discussed. In this session, the tables that the operating distance varying with the deviation angle were obtained with the premise that the laser facula distribution was Gaussian distribution and transmitting in turbulent atmosphere. By contrasting the tables, it could be showed that the operating distance was badly effected by the visibility and varying with the deviation angle when the laser facula was Gaussian distribution or transmitting in turbulent atmosphere.
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