Abstract: This article analyzes the system migration problem and solution of telecom BS-based systems, and also researches the IaaS and PaaS cloud computing solutions of those systems. Proposed two IaaS program and one PaaS program,it can effectively solve the problem in the implementation of cloud computing in the Web and application layer of telecom BS-based systems.Given the evolution path and the stages recommendations of system migration and implementation of cloud computing, those have good value to the application of cloud computing in the telecom IT support systems.