The present invention discloses a data sending method and a user equipment, and relates to the field of mobile communications. The method includes: receiving at least two uplink grants allocated by a base station; grouping uplink grants received at different moments in the at least two uplink grants to obtain multiplexing resources; and multiplexing data to be sent onto transport blocks corresponding to the multiplexing resources and sending the transport blocks. The user equipment includes a receiving module, a processing module and a sending module. In embodiments of the present invention, uplink grants are grouped according to sending moments of transport blocks corresponding to the uplink grants so as to determine multiplexing resources, and data is multiplexed onto transport blocks corresponding to the grouped uplink grants and the transport blocks are sent.