The present disclosure provides a data channel scheduling method, a data channel scheduling device and a data channel scheduling system. The data channel scheduling method includes steps of: configuring for a UE a set of serving cells; configuring for the UE a first serving cell and a second serving cell corresponding to each serving cell in the set of serving cells; transmitting a first PDCCH to the UE on the first serving cell corresponding to a third serving cell for scheduling the third serving cell to perform downlink data transmission with the UE; and transmitting a second PDCCH on the second serving cell corresponding to the third serving cell to the UE for scheduling the third serving cell to perform the uplink data transmission with the UE. The third serving cell is a serving cell in the set of serving cells. According to the present disclosure, the first serving cell for transmitting downlink scheduling information and the second serving cell for transmitting uplink scheduling information are configured separately for the serving cells for the data channel scheduling, so as to meet the requirements in the case that a carrier of an unlicensed frequency band is applied to CA.