The invention discloses a load balancing method and balancing device so that divergence between operators in balancing direction when load balancing is performed under a network sharing scene can be eliminated. The load balancing method is used for a source base station. The source base station is at least shared by a first operator and a second operator. The load balancing method comprises the steps that when the first operator requires to initiate load balancing in the source cell of the source base station, at least one cell is selected from the neighbor cells of the source cell to act as a target cell according to a cell selection strategy corresponding to the first operator; the target base station corresponding to the target cell is at least shared by the first operator and the second operator; and a first request message is transmitted to the target base station, and the resources of the second operator are utilized to assist the first operator to perform load balancing on the source cell at the target cell through the request. Divergence between the operators in balancing direction when load balancing is performed under the network sharing scene can be eliminated by the load balancing method.