Abstract: In the paper,the state-of-art of stealth technology is firstly analyzed briefly.It is pointed out that infrared stealth,audio stealth,visual stealth and other stealth technology ought to be developed rapidly besides radar stealth.Then,the status of research and application development of stealth technology abroad is introduced.At last,the thesis points out that the features such as wide band,all directional,all-weather,intelligentialized stealth technology and stealgh weapons represent the general trend of stealth development.