Abstract: A Ethernet-based remote monitoring design of air compressor station is presented in this paper. The operating equipments in the air compressor station can be observed and controlled remotely and intelligently through the designed information transmission network; the operating condition and parameters of the main equipments can be learned in time, so the maintenance of the equipments can be insured. The composition and realization of hardware and the expert system used here are discussed. The development of application software system based on configuration software is introduced. The practical operation shows that the system has the characteristics such as working stably, easy operation, etc. It can meet the requirement in equipment maintenance and wind-supply quality.