The invention provides a frequency locking control method and device for a concentrator, the frequency locking concentrator and a meter reading system. The method comprises the steps of searching fora plurality of base stations in a connection range; selecting one of the base stations in the connection range to perform login; after the login is successful, storing information of the logged base station as locked logged base station information for subsequent login; and uploading collected electricity utilization information to a main station through the logged base station. According to the frequency locking control method and device for the concentrator, the frequency locking concentrator and the meter reading system provided by the invention, the base station logged in by the concentrator can be locked, so that the problem that the concentrator is frequently online and offline is effectively avoided, the collection success rate of the concentrator is improved, and the normal operation of the meter reading system is guaranteed.