The invention relates to a high abrasion-resistance nylon composite material for a trolley of an airport freight train and a preparation method thereof. The composite material comprises the following main components in percentage by weight: 60 to 80 percent of nylon 6 or nylon 66 or a mixture of the nylon 6 and nylon 66, 5 to 13 percent of glass microspheres, 6 to 14 percent of glass fiber powderand 5 to 7 percent of lubricating antiwear agent. The composite material comprises the following minor components in percentage by weight: 3 to 5 percent of graft toughened modifier, 0.3 to 1 percentof antioxidant, 0.2 to 0.3 percent of lubricating dispersing agent and 0.2 to 0.5 percent of nucleating agent. The composite material of the invention has the characteristics of high wear resistance,high heat resistance, relatively high toughness and skid resistance and the like.