Abstract: Taking the 2S103 intelligent fully mechanized mining face of Wangjiata Coal Mine as an example, the specific implementation plan and application effect of intelligent fully mechanized mining face are analyzed, and the existing technical problems are summarized. According to actual situation of 2S103 working face, the intelligent frequency conversion speed regulation scheme of scraper conveyor and transfer machine is studied. By adding speed comparison and judgment module of the transfer machine and the scraper conveyor, the problem of overload and shutdown of the transfer machine due to the lag in speed control is solved, at the same time, it also guarantees the linked speed regulation operation of the transfer machine; Taking engineering quality and manual input as measuring index, the optimal coal mining plan is determined which combines memory cutting, automatic machine following and support moving, and manual adjustment; The shearer,hydraulic support and integrated liquid supply system are modified to improve safety, practicability and maintenance efficiency of related equipment, and eliminate a large number of potential safety hazards. By comparing and analyzing from aspecets of electricity consumption per ton of coal, coal cutting efficiency, reverse osmosis water consumption, personnel input, and small and medium repair costs, it is concluded that the intelligent fully mechanized mining face has achieved certain effects in energy saving, staff reduction, and material reduction. Technical problems existing in the practical application of intelligent fully mechanized mining face are summarized, in case of special structure,coal mining technology needs to be improved, the analytic function of video monitoring system needs to be perfected, etc. It is pointed out that to realize the smart mine, the research on safety monitoring system and smart brain should be actively promoted, and put forward some construction ideas and directions.