The disclosure discloses a method for terminal access and management in cloud computing, including: a terminal with a management and control module accesses a bidirectional data transmission network and acts as a node; the node searches for a first responding control node or agent control node and connects with a network management server via an agent control node connected to the found control node or via the found agent control node; a management and control module of a node at each level collects running information of the terminal and reports the running information level by level, and a nearest super-ordinate node performs a management operation. The disclosure further discloses a system for terminal access and management in cloud computing. With the method and the system, the problems that the system status has to be pre-estimated and a proper node has to be selected when new equipment access an original system can be solved, and after the access, a super-ordinate node can perform actively a control operation on the topological structure.