Abstract: In view of the important demand of modern mine ventilation information and intelligent upgrading in China, the principle of intelligent ventilation,key technology and the composition of the system of mine are studied. The defi- nition and connotation of mine intelligent ventilation are clearly explained. Mine intelligent ventilation is achieved through intelligent control on on-demand air supply,stably and economically deliver continuous and fresh air to the mine,for personnel breathing,dilution and discharge of harmful gases and dust,improving the mine climate conditions and disaster relief with a certain intelligent regulation of wind flow operations. Its connotation is to deeply integrate in- formation collection and processing technology,control technology and ventilation system,and achieve on-demand air supplying and abnormal disaster state intelligent decision-making and emergency controlling under the condition of “ based on peacetime,focused on disaster”,not only to meet the automatic management and maintenance of daily ven- tilation,but also to achieve the disaster period of emergency control air effectively inhibiting the evolution of disaster. Based on the non-linear optimization model of air network regulation,the model of mine intelligent air control is pro- posed,and the standardized workflow is designed including the execution and feedback of the intelligent information of the mine,the multi-information intelligence perception of the mine,the efficient and reliable information transmission, the intelligent analysis and decision-making of the ventilation state,the execution and feedback of the ventilation facili- ty / power intelligent regulation. Then,according to the concrete realization of the function of the intelligent ventilation system of the mine,the realization path of intelligent ventilation function of mine is respectively explained in detail from the key technologies such as the precision monitoring of ventilation parameters,diagnosis of ventilation anomaly and intelligent decision-making platform,ventilation power and intelligent regulation of facilities. Finally,the field test and application examples of the key technologies are presented such as the on-line monitoring of ventilation parameters and real-time solution of wind network,and regional linkage control.