The invention belongs to the field of safe and stable operation of impeller machines, and particularly relates to a device and method for controlling centrifugal fan rotating stalling. A nozzle set is installed in front of an impeller passage inlet nearby a volute tongue of a centrifugal fan. The included angles between nozzles of the nozzle set and the inner circumferential tangential direction of an impeller are consistent with installation angles of blades. The nozzle set is connected with an air compressor through a metal high-speed air pipeline, a manually-operated valve and an electromagnetic valve. Two pressure transmitters are fixedly connected to an inlet pipeline and an outlet pipeline of the centrifugal fan respectively. A programmable controller is respectively connected with the air compressor, the electromagnetic valve and the two pressure transmitters through data lines. By extracting a draught fan full-pressure signal and utilizing the amplitude, which fluctuates along with time, of full pressure, the generation of a stalling omen is judged. The stalling omen of the centrifugal fan is generated inside passages nearby the volute tongue, by spraying high-speed airflow into the passages nearby the volute tongue, kinetic energy of gas is improved, and the rotating stalling is restrained from happening.