Abstract: In the view of the particles holography,the resolution and the size of holography film is discussed.The image principle of sensitization about holography film is analyzed.The effect of Gaussian beam distribution and the exposure amount on the recording and reconstruction is studied and the experimental results are obtained.The characteristic curves of three kinds of selected holography film are measured in the same process flow of bathe film.The most suitable exposure of SY-2 film is(180μJ/cm2) for in-line particles holography.