Mine ventilation is the most effective means to solve underground air pollution,lower underground temperature and ensure comfortable working environment.In view of the situation that the air volume of the existing ventilation system in Woxi Pithead is difficult to control and the system can not realize on-demand ventilation,this paper used the iVent shaft ventilation system platform to build the topology relationship and network solution model of Woxi Pithead ventilation network.The paper analyzed the operation state of Woxi Pithead ventilation system,diagnosed the whole set of system according to the air volume state and resistance of mine fan,and optimized the ventilation system based on the analysis and diagnosis results.The research results provide data support and theoretical basis for the mine to improve and transform the existing ventilation facilities and daily management of the ventilation system.