Fast recovery method and device for port control protocol

Provided is a fast recovery method for a port control protocol. The method comprises: a backup PCP server notifying a user to generate PCP server switching; and the backup PCP server receiving a token sent by the user and generating new mapping information according to the received token. The technical solution provided in the embodiments of the present invention uses a token to verify the validity of a user identity when performing fast PCP recovery, so that a main/standby PCP server securely and reliably complete fast switching, thereby ensuring that a user communication service proceeds normally.