Study on the ideas and methods of using the technology of LDAP and single sign-on technology to establish a unified user management system in the meteorological industry. According to the analysis of the status of the existing meteorological business applications, this paper proposed a solutions program based on the LDAP directory services and single sign-on technology. Focus on the establishment of an LDAP directory, authentication and single sign-on. At the same time, it briefly introduces the establishment of the system flow, so that the user authentication and access control is more efficient, and management more convenient.