Embodiments of the present invention provide a method for transmitting a data signal and a user equipment, where the method includes: acquiring, by a first user equipment, a scheduling assignment signal sent by a second user equipment and a scheduling assignment signal sent by at least one third user equipment, where the second user equipment is a user equipment that performs D2D communication with the first user equipment; determining, by the first user equipment, a first time adjustment amount according to a time adjustment amount included in the acquired scheduling assignment signal; and receiving, by the first user equipment according to the first time adjustment amount and subframe information that is included in the scheduling assignment signal sent by the second user equipment, a data signal sent by the second user equipment.