The invention relates to a service scheduling method and a device in an LTE system. The method comprises steps: a service data message corresponding to a target service is received, wherein the service data message carries a differential service code point (DSCP) tag, and the DSCP tag comprises a tag added by an upper network element in the service data message according to an identification result of the target service; the DSCP tag is analyzed, and according to the analysis result of the DSCP tag and a pre-built service priority model, the priority of the data message is determined; and according to the priority of the data message and a pre-built service optimal scheduling model, scheduling parameters are determined, and the service data message is scheduled. The method and the device in the invention do not rely on a core network scheduling policy, more services can be distinguished by adopting the DSCP tag, matched connection with the upper network element is facilitated, the feasibility and the availability of the scheme can be improved, service-level differential scheduling can be realized efficiently, and as the existing network is little changed, fast and smooth evolutioncan be truly realized.