To provide a more reasonable and feasible "three-machine" matching scheme for ultra-long working faces in medium-thick coal seams, a suitable matching scheme for a 2-3m thick coal seam and a 450m ultra-long fully mechanized working face at the Xiaobaodang No. 2 Mine's 132202 working face was proposed. This scheme considers geological conditions and mining processes, and the power and other parameters of the "three machines" were calculated sequentially. The model selection was explained from three perspectives: production capacity, lifespan, and size and position coordination, to ensure the safe and efficient operation of the "three machines." Underground operation results show that the matching scheme is reasonable, the equipment operates well, and the expected goal of producing ten million tons per year has been achieved. This matching scheme provides both theoretical and practical experience for achieving mechanized mining of ultra-long working faces in medium-thick coal seams under similar conditions and contributes to the further development of ultra-long working face applications.