The invention relates to a proportional fairness scheduling method of an LTE (long term evolution) system for large-scale users. Originally constructed 1ms scheduling granularity is expanded to be 10ms scheduling granularity by a scheduler, all users are ranked in every 10ms, and the work of calculating the weight and rank of the users is finished in 10ms. The scheduler adopts a ping/pong scheduling queue, and each radio frame is used alternately. The current radio frame uses the ping/pong scheduling queue generated by the last radio frame, and the scheduler generates the pong/ping scheduling queue for the next radio frame. Due to the expansion of the scheduling granularity and adoption of the ping/pong scheduling queue, the load of a base station is lowered, the system efficiency is improved, the user scheduling quantity is increased, and the system performance of the base station is improved.