The company of SUN and IBM do not have a good enterprise solution for SSO based on sun am for Domino system. The solution is currently achieved through the password. So, if intercepted by a user’s password, it will result in incalculable damage, and will not conform to the concept of SSO. The AM SSO solution for Domino is designed after analyzing the technology of domino’s DSAPI, the generation mechanism of domino session, and the AM SSO process. It has solved the technology bottlenecks of SSO based on SUN for domino system, and provided a enterprise solution for enterprise business Integration