This paper presents an optical method for measuring the flutter of plane model with dynamic shadow Moire topography.There are some advantages of this method in comparison with the electric method by using acceleration sensor, such as getting all information of the measured surface instead of that from only several points,simplifiod the testing process, and especially the information are recorded on the film for reconstruction. In this paper, the function of intensity distribution of Moire topography using the principle of light intensity and Fourier series expansion under any arrangmeni,and the formulae of the depth of Moire topography are derived. The errors of the formulae are analysed. In order to satisfy the accuracy requirement, the error of grating pitch mus t be less than 0.02 mm. This paper also describes the principles and dimensions of an arrangment device in test, which combined with shadow Moir6 topography and ZL1 high-speed camera, was used to measure the first and second order vibrations of plane model. Data analysis of the maximum amplitude of 15 coordinate-points, drawing of the "position-amplitude" curves for first and second, order vibrations, as well as "time-amplitude" curves for second order vibration were made. We have compared the results of this method in accuracy with the electric method by using acceleration sensor. The deviation of amplitude is less than ± 0.03 along the spanwise center-line for first order vibration, and less than ± 0.065 mm along the chordwise center-line for second order vibration on the measured surface of plane model. The results of the experiments show that this optical method can be used for measuring the flutter of plane model, and its accuracy is quite satisfactory.