Abstract: To solve the three basic problems of constructing digital fully mechanized coal mining face,i. e. ,scene construction,virtual real interaction channel and virtual model driven,a real-time virtual monitoring method for the pro- duction system of a fully mechanized coal face was proposed. Some methods were studied,mainly including the joint virtual simulation and collaborative planning of coal seam and equipment with high reliability,the acquisition of real- time reliable information and the channel construction technology of “virtual reality fusion”,the consistency presenta- tion of virtual reality fusion and perception,etc. Firstly,based on the characteristics of Unity3D development and model requirements,the digital model of three machines equipment and the models of roof and floor of coal seam were con- structed respectively. Also,the virtual equipment was arranged in virtual coal seam,then the virtual cooperation be- tween each equipment was realized and the relationship between equipment and coal seam was built. The simulation of equipment co-propulsion in virtual coal seam was completed and the virtual planning of equipment group co-operation was carried out. The construction of fully mechanized mining virtual scene with high fidelity was realized. Secondly, many sensors were arranged on the key positions which can reflect the position and attitude information of equipment. Through a series of interfaces and channels,the information interaction between Unity3D and configuration software, database and computing software was constructed. The data transmission processing was optimized by using distributed collaborative driven mode,and the real-time operation date of fully mechanized mining equipment could be finally im- ported into the virtual platform to drive the virtual equipment,and the cooperation and dispatch of stable and reliable sensor information was realized. Thirdly,the real-time driving frame of complex fully mechanized mining virtual scene was constructed. The key technology of driving virtual single machine based on bottom model was studied. The methods of cooperative simulation and real-time data drive of mining and transportation equipment,automatic height adjustment of shearer,collaborative simulation and real-time data drive of scraper conveyor and hydraulic supports,virtual driving method of virtual hydraulic support groups and real-time analysis of space-time kinematics method of dynamic trans- parent working face were put forward. Then virtual monitoring interface was designed,and the high accuracy fusion of sensing data and virtual simulation operation information was realized. Finally,the related tests were completed on the fully mechanized coal mining test system and the prototype test platform respectively,which verified the correctness and reliability of the joint operation of the three modules. Experiments showed that the VR monitoring system run clearly and smoothly,the virtual reality mapping state was synchronized,the switch ability was good,the presentation information was accurate,and the background database pressure was also small,which can meet the expected goal. In the simulation operation,the relevant parameters of each equipment and coal seam operation can be extracted in real time to complete the high reliability virtual planning.