The present invention provides a safe handover method and system which are applied in a handover process of a terminal in the next generation network, wherein the next generation network comprises a handover management module, an authentication server and a terminal. The safe handover method comprises: presetting initial safety parameters in the authentication server and the terminal, and generating safety parameters from the initial safety parameters; the handover management module obtaining the safety parameters; and the handover management module and the terminal interacting with each other by using the generated safety parameters to ensure a communication safety between the two communication parties. The present invention can ensure the communication safety between the terminal and the handover management module.