A cell handover method, comprising: sending, by user equipment, UE, a first measurement report to a first evolved NodeB, eNB, wherein the first eNB is a base station to which a current cell serving the UE belongs, and the first measurement report is used to indicate that the current cell and a neighboring cell of the current cell meet a pre-handover condition; receiving, by the UE, a pre-handover instruction returned by the first eNB for the first measurement report, wherein the pre-handover instruction comprises an index identifier and configuration information corresponding to a second eNB; sending, by the UE in response to the pre-handover instruction, a random access preamble indicated by the index identifier; establishing, by the UE based on the configuration information, a radio bearer corresponding to the second eNB; and receiving, by the UE, a timing advance and an uplink indication message, wherein the uplink indication message is used to indicate an uplink resource used when the UE communicates with the second eNB, and the timing advance is used by the UE to perform uplink synchronization with the second eNB, characterized in that, before establishing a radio bearer, by further steps of: sending, by the UE, a second measurement report to the first eNB, and receiving a handover instruction returned by the first eNB for the second measurement report, wherein the second measurement report is used to indicate that the current cell and the neighboring cell meet a handover condition, and the handover instruction is used to instruct the UE to switch a cell serving the UE from the current cell to the neighboring cell; enabling, by the UE, the radio bearer in response to the handover instruction; and sending, by the UE, a cell handover complete indication message to the second eNB. sending, by user equipment, UE, a first measurement report to a first evolved NodeB, eNB, wherein the first eNB is a base station to which a current cell serving the UE belongs, and the first measurement report is used to indicate that the current cell and a neighboring cell of the current cell meet a pre-handover condition; receiving, by the UE, a pre-handover instruction returned by the first eNB for the first measurement report, wherein the pre-handover instruction comprises an index identifier and configuration information corresponding to a second eNB; sending, by the UE in response to the pre-handover instruction, a random access preamble indicated by the index identifier; establishing, by the UE based on the configuration information, a radio bearer corresponding to the second eNB; and receiving, by the UE, a timing advance and an uplink indication message, wherein the uplink indication message is used to indicate an uplink resource used when the UE communicates with the second eNB, and the timing advance is used by the UE to perform uplink synchronization with the second eNB, characterized in that, before establishing a radio bearer, by further steps of: sending, by the UE, a second measurement report to the first eNB, and receiving a handover instruction returned by the first eNB for the second measurement report, wherein the second measurement report is used to indicate that the current cell and the neighboring cell meet a handover condition, and the handover instruction is used to instruct the UE to switch a cell serving the UE from the current cell to the neighboring cell; enabling, by the UE, the radio bearer in response to the handover instruction; and sending, by the UE, a cell handover complete indication message to the second eNB. sending, by the UE, a second measurement report to the first eNB, and receiving a handover instruction returned by the first eNB for the second measurement report, wherein the second measurement report is used to indicate that the current cell and the neighboring cell meet a handover condition, and the handover instruction is used to instruct the UE to switch a cell serving the UE from the current cell to the neighboring cell; enabling, by the UE, the radio bearer in response to the handover instruction; and sending, by the UE, a cell handover complete indication message to the second eNB.