A method for transmitting multi-carrier enhanced dedicated channel data, comprising a first sending step and a first receiving step, wherein the first sending step comprises: when a node B only has an enhanced dedicated channel cell of a single carrier frequency layer in the multi-carrier, setting “uplink multiplexing information” in an enhanced dedicated channel uplink data frame as “null” and sending it to a serving radio network controller; the first receiving step comprises: the serving radio network controller receiving the enhanced dedicated channel uplink data frame sent by the node B of sender which only has the enhanced dedicated channel cell of a single carrier frequency layer in the multi-carrier, and distinguishing which carrier in the multi-carrier is the carrier for receiving data carried in the enhanced dedicated channel uplink data frame based on carrier identifier information corresponding to carrier frequency of the enhanced dedicated channel cell recorded.