Business processing method and device and readable medium

The invention discloses a service processing method and device and a readable medium, and the method comprises the steps: receiving a service deceleration request of a service currently used by a target user, and enabling the service deceleration request to carry an Internet protocol IP address of the target user and a user number of the target user; determining the PCRF to which the target user belongs according to the IP address and the user number of the target user and the corresponding relationship among the user number, the IP address and the identification information of the PCRF in thecorresponding relationship list; and sending a service management and control request to a PCRF to which the target user belongs, and managing and controlling the service by the PCRF. Through the above corresponding relation list, the PCRF to which the target user belongs can be accurately determined, so that the PCRF can effectively manage and control the service needing to be managed and controlled, and the problem tha