This paper mainly talks about the long-distance unconventional deploying method of AUV in emergent conditions,starting with the traditional layout method and its shortcomings. Then,several deploying methods including their main characteristics and technical difficulties are emphasized,such as rocket-assisted deployment,airdrop deployment,underwater carrier platform deployment,mothership mine rail deployment and USV deployment. In addition,the problems that need to pay attention to in these methods are analyzed. This paper ends up with the conclusion that these unconventional deploying methods have strong operability and wide application prospects.