The yellow laser, which is close to the sensitive area of human eyes, plays an important role in many fields, and the resonant cavity is an important component of laser. A four wavelengths cavity surface film by using a vacuum coating equipment was developed based on Nd∶YVO4 crystal (c-cut). First, in the process of film system design, the distribution of standing wave field reasonably in the film was made by analyzing the film field strength and optimizing the film system, thus to reduce the possibility of film damage theoretically. Then, through technics feedback analysis to the test result by TFCalc and several simulation experiments, it was found that in different wavelengths the film thickness ratio is different even in the same monitoring method. And the problem of spectral curve drift was solved by adjusting the tool factor. Finally, the yellow laser cavity surface film with firm film and stable chemical performance was prepared, which also met the requirements of four wavelengths spectral output.