A method for configuring discontinuous reception at establishing a trunking service, comprising: receiving, by a base station device, indication information that a user equipment has entered a trunking service mode, wherein the indication information is sent by an evolved packet core network device; responding, by the base station device, to the indication information, and creating a radio resource control connection with the user equipment; generating, by the base station device, radio resource connection configuration information comprising a first discontinuous reception cycle and a second discontinuous reception cycle, wherein the information indicates a timer drxShortCycleTimer, and the first discontinuous reception cycle is smaller than the second discontinuous reception cycle; sending, by the base station device, the radio resource connection configuration information to the user equipment, so that the user equipment configures the first discontinuous reception cycle and the second discontinuous reception cycle as a discontinuous reception cycle of the user equipment itself; and sending, by the base station device, a discontinuous reception command of entering the trunking service mode to the user equipment, wherein the command is used to, when the user equipment is in the trunking service mode, instruct the user equipment to retain, by using the first discontinuous reception cycle, a first discontinuous reception cycle state, and close the drxShortCycleTimer timer; when the user equipment is in the trunking service mode, retaining, by the base station device, the radio resource control connection with the user equipment according to the radio resource connection configuration information. receiving, by a base station device, indication information that a user equipment has entered a trunking service mode, wherein the indication information is sent by an evolved packet core network device; responding, by the base station device, to the indication information, and creating a radio resource control connection with the user equipment; generating, by the base station device, radio resource connection configuration information comprising a first discontinuous reception cycle and a second discontinuous reception cycle, wherein the information indicates a timer drxShortCycleTimer, and the first discontinuous reception cycle is smaller than the second discontinuous reception cycle; sending, by the base station device, the radio resource connection configuration information to the user equipment, so that the user equipment configures the first discontinuous reception cycle and the second discontinuous reception cycle as a discontinuous reception cycle of the user equipment itself; and sending, by the base station device, a discontinuous reception command of entering the trunking service mode to the user equipment, wherein the command is used to, when the user equipment is in the trunking service mode, instruct the user equipment to retain, by using the first discontinuous reception cycle, a first discontinuous reception cycle state, and close the drxShortCycleTimer timer; when the user equipment is in the trunking service mode, retaining, by the base station device, the radio resource control connection with the user equipment according to the radio resource connection configuration information.