Service transmission method, apparatus and system in carrier switching process

The present invention provides a transmission method and device in switching process of carrier wave, wherein the method comprises the following procedures: transmitting service with multiplexing carrier or special carrier, and carrying carrier switching indicating information which is used for representing that the next frame is multiplexing carrier frame or special carrier frame in the transmitted multiplexing carrier or special carrier frame; and receiving the service carried in the next frame of multiplexing carrier or special carrier according to the carrier switching indicating information for processing. As a service transmission mode that carrier switching indication information is transmitted in multiplexing carrier frame or special carrier frame in an embodiment of the invention, the carrier type of the next frame can be obtained at the service receiving end, thereby facilitating the receiving and processing of service with a corresponding carrier signal detecting and receiving mode, and furthermore