Abstract: According to the underground geological conditions and performance and parameters of fully mechanized mining equipments, Pingdingshan Tian'an Coal Mine Company No.4 Mine carried on fully mechanized mining equipments matching technology research for large mining length thin seam, systematically analyzes the technical requirements and selection principles for thin seam coal face shearer, hydraulic support, scraper conveyor "three-machine" selection, and introduces the practical experience and application results of Pingdingshan Tian'an Coal Mine Company No.4 Mine.