Abstract: A new method of improving the laser beam transverse intensity distribution measurement is presented. By considering the overlap of the neighboring measured area and the sampling area integration for each measured point with the aid of linear equations group theory, the improvement of measuring precision of laser beam transverse intensity distribution can be achieved. Using this algorithm, Gaussian laser beams of different modes are simulated for comparing. Without changing the size of the sampling area, the improvement of precision of the laser beam intensity distribution are achieved.