A radio network information management method, wherein the method comprises: determining , by a network device, if a signal strength obtained from a user equipment, UE, of a first cell in a first cell set containing the first cell and at least one intra-frequency neighboring cell of the first cell is within a signal strength range of the first cell for a first mobility management unit, and determining for each of the at least one neighboring cell if a signal strength obtained from the UE of the neighboring cell is within a signal strength range of the neighboring cell for the first mobility management unit, the first mobility management unit being an area obtained by dividing the first cell and defined by the signal strength range of the first cell for the first mobility management unit and the signal strength range of each of the at least one neighboring cell of the first cell set for the first mobility management unit, and if determining that the signal strength of the first cell is within the signal strength range of the first cell for the first mobility management unit and if determining for each of the at least one neighboring cell that the signal strength of the neighboring cell is within the signal strength range of the neighboring cell for the first mobility management unit, determining, by the network device, that the UE exists in the first mobility management unit; and determining , by the network device, radio network information of the first mobility management unit according to measurement statistic information of the UE in the first mobility management unit, wherein the radio network information comprises at least one type of the following information: signal strength information of the first cell in the first mobility management unit, signal strength information of at least one neighboring cell of the first cell in the first mobility management unit, or a statistic value of at least one key performance indicator, KPI, in the first mobility management unit. determining , by a network device, if a signal strength obtained from a user equipment, UE, of a first cell in a first cell set containing the first cell and at least one intra-frequency neighboring cell of the first cell is within a signal strength range of the first cell for a first mobility management unit, and determining for each of the at least one neighboring cell if a signal strength obtained from the UE of the neighboring cell is within a signal strength range of the neighboring cell for the first mobility management unit, the first mobility management unit being an area obtained by dividing the first cell and defined by the signal strength range of the first cell for the first mobility management unit and the signal strength range of each of the at least one neighboring cell of the first cell set for the first mobility management unit, and if determining that the signal strength of the first cell is within the signal strength range of the first cell for the first mobility management unit and if determining for each of the at least one neighboring cell that the signal strength of the neighboring cell is within the signal strength range of the neighboring cell for the first mobility management unit, determining, by the network device, that the UE exists in the first mobility management unit; and determining , by the network device, radio network information of the first mobility management unit according to measurement statistic information of the UE in the first mobility management unit, wherein the radio network information comprises at least one type of the following information: signal strength information of the first cell in the first mobility management unit, signal strength information of at least one neighboring cell of the first cell in the first mobility management unit, or a statistic value of at least one key performance indicator, KPI, in the first mobility management unit. <EOS>