A cell load balancing method, comprising: acquiring information of load of a current cell; sending (S601, S701) a resource status request message carrying an indication parameter to an adjacent cell which is adjacent to the current cell; wherein the indication parameter is configured to indicate that the adjacent cell reports information of load of the adjacent cell if an event threshold is satisfied, or configured to indicate that the adjacent cell reports information of load of the adjacent cell if a report period is reached and an event threshold is satisfied (S602, S702); receiving (S602, S702) the information of the load of the adjacent cell sent from the adjacent cell; acquiring a set of candidate target cells according to a performance parameter relating to handover between the current cell and the adjacent cell, wherein the candidate target cells are selected from adjacent cells which are adjacent to the current cell; determining that a candidate target cell of the set of the candidate target cells is a target cell in which a mobility parameter needs to be modified based on the information of load of the current cell and information of load of the candidate target cell ; sending (S102) a parameter modification request to the target cell; receiving (S1003) a parameter modification response message returned by a target node of the target cell; and modifying (S1003) local parameters according to content of the parameter modification request if the parameter modification response message is a parameter modification response indicating modification successful; or, abandoning current modification or initiating a new parameter modification request according to returned cause value if the parameter modification response message is a parameter modification response indicating modification failed. acquiring information of load of a current cell; sending (S601, S701) a resource status request message carrying an indication parameter to an adjacent cell which is adjacent to the current cell; wherein the indication parameter is configured to indicate that the adjacent cell reports information of load of the adjacent cell if an event threshold is satisfied, or configured to indicate that the adjacent cell reports information of load of the adjacent cell if a report period is reached and an event threshold is satisfied (S602, S702); receiving (S602, S702) the information of the load of the adjacent cell sent from the adjacent cell; acquiring a set of candidate target cells according to a performance parameter relating to handover between the current cell and the adjacent cell, wherein the candidate target cells are selected from adjacent cells which are adjacent to the current cell; determining that a candidate target cell of the set of the candidate target cells is a target cell in which a mobility parameter needs to be modified based on the information of load of the current cell and information of load of the candidate target cell ; sending (S102) a parameter modification request to the target cell; receiving (S1003) a parameter modification response message returned by a target node of the target cell; and modifying (S1003) local parameters according to content of the parameter modification request if the parameter modification response message is a parameter modification response indicating modification successful; or, abandoning current modification or initiating a new parameter modification request according to returned cause value if the parameter modification response message is a parameter modification response indicating modification failed. <EOS>