A load balance method, comprising: obtaining, by a radio resource management, RRM, server, load information reported by base stations, wherein the base stations comprise a Long Term Evolution, LTE, base station; determining, by the RRM server, an overloaded base station in the base stations; determining, by the RRM server, a target base station according to the load information, wherein the target base station is a base station to share a load of the overloaded base station; and instructing, by the RRM server, the overloaded base station and the target base station to perform load balance; wherein the determining a target base station according to the load information comprises: determining light-loaded base stations in the base stations according to the load information; and selecting a target base station from the light-loaded base stations according to a preset condition, wherein the preset condition comprises a combination of at least two of a base station mode, a distance from the overloaded base station, and a base station load state; wherein the selecting a target base station from the light-loaded base stations according to a preset condition comprises: executing judgment conditions for selecting a target base station in turn, and terminating the process of selecting a target base station when a unique target base station is selected, wherein the judgment conditions comprise: first, selecting preferentially a light-loaded base station in the same mode as the overloaded base station from the light-loaded base stations; secondly, selecting a light-loaded base station closest to the overloaded base station; and thirdly, selecting a light-loaded base station with lightest load; wherein the base station mode is a Long Term Evolution, LTE, mode, or a Universal Mobile Telecommunications System, UMTS, mode, or a Global System for Mobile communications, GSM, mode. obtaining, by a radio resource management, RRM, server, load information reported by base stations, wherein the base stations comprise a Long Term Evolution, LTE, base station; determining, by the RRM server, an overloaded base station in the base stations; determining, by the RRM server, a target base station according to the load information, wherein the target base station is a base station to share a load of the overloaded base station; and instructing, by the RRM server, the overloaded base station and the target base station to perform load balance; wherein the determining a target base station according to the load information comprises: determining light-loaded base stations in the base stations according to the load information; and selecting a target base station from the light-loaded base stations according to a preset condition, wherein the preset condition comprises a combination of at least two of a base station mode, a distance from the overloaded base station, and a base station load state; wherein the selecting a target base station from the light-loaded base stations according to a preset condition comprises: executing judgment conditions for selecting a target base station in turn, and terminating the process of selecting a target base station when a unique target base station is selected, wherein the judgment conditions comprise: first, selecting preferentially a light-loaded base station in the same mode as the overloaded base station from the light-loaded base stations; secondly, selecting a light-loaded base station closest to the overloaded base station; and thirdly, selecting a light-loaded base station with lightest load; wherein the base station mode is a Long Term Evolution, LTE, mode, or a Universal Mobile Telecommunications System, UMTS, mode, or a Global System for Mobile communications, GSM, mode. determining light-loaded base stations in the base stations according to the load information; and selecting a target base station from the light-loaded base stations according to a preset condition, wherein the preset condition comprises a combination of at least two of a base station mode, a distance from the overloaded base station, and a base station load state; wherein the selecting a target base station from the light-loaded base stations according to a preset condition comprises: executing judgment conditions for selecting a target base station in turn, and terminating the process of selecting a target base station when a unique target base station is selected, wherein the judgment conditions comprise: first, selecting preferentially a light-loaded base station in the same mode as the overloaded base station from the light-loaded base stations; secondly, selecting a light-loaded base station closest to the overloaded base station; and thirdly, selecting a light-loaded base station with lightest load; wherein the base station mode is a Long Term Evolution, LTE, mode, or a Universal Mobile Telecommunications System, UMTS, mode, or a Global System for Mobile communications, GSM, mode. executing judgment conditions for selecting a target base station in turn, and terminating the process of selecting a target base station when a unique target base station is selected, wherein the judgment conditions comprise: first, selecting preferentially a light-loaded base station in the same mode as the overloaded base station from the light-loaded base stations; secondly, selecting a light-loaded base station closest to the overloaded base station; and thirdly, selecting a light-loaded base station with lightest load; wherein the base station mode is a Long Term Evolution, LTE, mode, or a Universal Mobile Telecommunications System, UMTS, mode, or a Global System for Mobile communications, GSM, mode.