Based on the college physical experiment of interference pattern observation by Michelsoninterferometer，an experiment to measure the surface profile is proposed． It asks the student to obtain theinterference pattern with proper period by adding the additional optical path difference from adjustment of reference mirror inclination．The CCD or industrial camera is used to capture single frame of the interference pattern．Matlab is used to make the program mainly containing the Fourier transform and filtering algorithm to process the interference pattern to calculate the surface profile．