Abstract: As the life of the spacescraft increased from five years to more than eight years, the longer that optical film suffered from the radiation of space charged particles, the easier for optical film to get damaged. Therefore, it is necessary to continue to improve the requirements to the capacity and anti-radiation performance of optical film. In this article, the radiation of proton and electrons experiment of bandpass filter has been made. Research the deterioration of bandpass filter which is under the radiation of proton and electrons. Analysis the micro-mechanism of the bandpass filter irradiation damage based on the XPS and AFM surface analysis technique. Provide bandpass filter space adaptability with a basic research, at the same time, some advice for further improvement of bandpass filter's design was given.