The submarine is a major threat to surface ships and the ground target thousands of miles far.In order to deal with the submarine dived beneath the ocean,anti-submarine technology is a countermeasure that military concerned about.In this paper,by comparing with the traditional detection methods and infrared detection methods,the shortcomings of traditional detection method and the advantages of infrared detection are analyzed,the advanced infrared anti-submarine equipment status is introduced,the development trend of infrared anti-submarine system is proposed.