UV filters is the key component of UV communication system，and it can effectively decrease the effect of background noise on the communication and improve communication quality and reliability of the system.Combined with research status at home and abroad，the work principle，material properties and preparation methods of UV interference filters and UV absorption filters are discussed.Base on this，testing technologies for two types of the filters are deeply analyzed，and the development trend of UV filters is pointed out，which provides a theoretical basis and practical reference for further study on UV communication filters.