The present invention provides a service processing method, device and system. The method includes: receiving a service packet, and searching, according to a service identity in the service packet, a service routing table corresponding to the service packet, where the service identity represents a service to be processed by the service packet; and the service routing table includes a service label used to represent a service feature in the service, and a routing path for processing the service feature; and setting the service label in the service packet according to the service routing table, and sending, according to the routing path, the service packet to a service processing device configured to process the service feature corresponding to the service label, so that the service processing device processes the service feature corresponding to the service label. The present invention reduces an impact on an original service and improves scalability.