A method for implementing multi-carrier HSDPA for a TD-SCDMA system, comprising: Step 1, establishing a multi-carrier cell at the network side, and multiple carrier resources on the multi-carrier cell being managed and allocated as a whole at the network side; step 2, configuring HS-PDSCH resources on at least one of the carriers of the multi-carrier cell, and configuring at least one pair of HS-SCCH and HS-SICH physical channel resources on at least one of the carriers, at the same time, creating a MAC-hs entity of a high speed media access control sub-layer to manage the channel resources on the carriers and the configuration of the MAC-hs entity itself; step 3, the network side allocating HSDPA resources to a user terminal and sending the HSDPA resources to the user terminal; and step 4, the network side allocating the HSDPA resources on at least one of the carriers dynamically to the user terminal for service data transmission; further comprising a step that the user terminal reports to the network side the information of the number of the carriers on which it can support to perform the HS-PDSCH processes simultaneously, the information is multi-carrier HSDPA capability information; wherein, allocating HSDPA resources by the network side to a user terminal in step 3 further comprises: step 31, a RNC at the network side determines to allocate multi-carrier HSDPA resources for the user terminal and sends a request message to the Node B; step 32, a MAC-hs entity in the Node B at the network side allocates at least one of the carriers on which HS-PDSCH physical channels resources will be allocated for service data transmission to the user terminal according to the information of the supported number of carriers reported by the user terminal and the service characteristics carried by the HS-DSCH; and step 33, the MAC-hs entity in the Node B at the network side allocates at least one pair of the HS-SCCH and HS-SICH physical channel resources to associate with the HS-PDSCH resources on each carrier for carrying the control information of allocating the HS-PDSCH on the carrier and receiving feedback information. Step 1, establishing a multi-carrier cell at the network side, and multiple carrier resources on the multi-carrier cell being managed and allocated as a whole at the network side; step 2, configuring HS-PDSCH resources on at least one of the carriers of the multi-carrier cell, and configuring at least one pair of HS-SCCH and HS-SICH physical channel resources on at least one of the carriers, at the same time, creating a MAC-hs entity of a high speed media access control sub-layer to manage the channel resources on the carriers and the configuration of the MAC-hs entity itself; step 3, the network side allocating HSDPA resources to a user terminal and sending the HSDPA resources to the user terminal; and step 4, the network side allocating the HSDPA resources on at least one of the carriers dynamically to the user terminal for service data transmission; step 31, a RNC at the network side determines to allocate multi-carrier HSDPA resources for the user terminal and sends a request message to the Node B; step 32, a MAC-hs entity in the Node B at the network side allocates at least one of the carriers on which HS-PDSCH physical channels resources will be allocated for service data transmission to the user terminal according to the information of the supported number of carriers reported by the user terminal and the service characteristics carried by the HS-DSCH; and step 33, the MAC-hs entity in the Node B at the network side allocates at least one pair of the HS-SCCH and HS-SICH physical channel resources to associate with the HS-PDSCH resources on each carrier for carrying the control information of allocating the HS-PDSCH on the carrier and receiving feedback information.