The invention discloses a method and equipment for allocating service bandwidth resources, and belongs to the technical field of communications. The method comprises the following steps: dividing an IP channel for service access on a Node B side into a plurality of sub-channels; and establishing one-to-one corresponding relations between the sub-channels and service types of transmitted data, and when a certain service is accessed, selecting a sub-channel corresponding to a service type to bear the data to be transmitted according to the service type of the data to be transmitted and the corresponding relations. By controlling the bandwidth resources in an IP transmission mode, transmission of data in various service types is planned and controlled reasonably, so that the data transmission is ensured to be more reasonable.