A radio resource control RRC connection release method, comprising: sending, by user equipment UE, a first message to a base station, wherein the first message carries a preset RRC release time determining parameter or a first RRC release time; if the UE adds the first RRC release time to the first message, setting, by the UE, timing duration of a first timer based on the first RRC release time, and starting the first timer; or if the UE adds the preset RRC release time determining parameter to the first message, receiving, by the UE, a response message fed back by the base station for the first message, wherein the response message carries a second RRC release time determined by the base station based on the preset RRC release time determining parameter, setting, by the UE, timing duration of the first timer based on the second RRC release time, and starting the first timer; and releasing, by the UE, an RRC connection when the first timer expires; characterized in that before the releasing, by the UE, an RRC connection when the first timer expires, the method further comprises: reporting, by the UE, a buffer status report BSR to the base station, wherein the BSR is used to instruct the base station to adjust timing duration of a second timer, and the timing duration of the second timer is set by the base station based on the first message sent by the UE; and receiving, by the UE, a first adjustment instruction returned by the base station, and adjusting the timing duration of the first timer based on the first adjustment instruction.. sending, by user equipment UE, a first message to a base station, wherein the first message carries a preset RRC release time determining parameter or a first RRC release time; if the UE adds the first RRC release time to the first message, setting, by the UE, timing duration of a first timer based on the first RRC release time, and starting the first timer; or if the UE adds the preset RRC release time determining parameter to the first message, receiving, by the UE, a response message fed back by the base station for the first message, wherein the response message carries a second RRC release time determined by the base station based on the preset RRC release time determining parameter, setting, by the UE, timing duration of the first timer based on the second RRC release time, and starting the first timer; and releasing, by the UE, an RRC connection when the first timer expires; characterized in that before the releasing, by the UE, an RRC connection when the first timer expires, the method further comprises: reporting, by the UE, a buffer status report BSR to the base station, wherein the BSR is used to instruct the base station to adjust timing duration of a second timer, and the timing duration of the second timer is set by the base station based on the first message sent by the UE; and receiving, by the UE, a first adjustment instruction returned by the base station, and adjusting the timing duration of the first timer based on the first adjustment instruction.. reporting, by the UE, a buffer status report BSR to the base station, wherein the BSR is used to instruct the base station to adjust timing duration of a second timer, and the timing duration of the second timer is set by the base station based on the first message sent by the UE; and receiving, by the UE, a first adjustment instruction returned by the base station, and adjusting the timing duration of the first timer based on the first adjustment instruction..