The invention relates to a base station activation and beam-forming method based on a stable access relation. The method includes steps: (1) setting network parameters; (2) initializing a time slot and a base station state vector with zero time slot; and (3) calculating a beam-forming matrix and the base station stator vector by employing an ADMM algorithm. According to the method, the system satisfies service quality requirements of various users, the energy consumption of the system is minimum, the network performance is enhanced through flexible optimization of the access relation, the stability of the access relation is considered, the access relation of the base station user can maintain stable in a long time, complicated operation, extra energy consumption and communication interruption caused by frequent switching of the access relation are avoided, and the cost for the calculation time is reduced by employing distributed iterative implementation.