Based on the powder feeding 3D printer,using tensile strength as an index,the best molding process parameters of granular thermoplastic polyurethane elastomers were determined by the orthogonal test method as follows:barrel temperature 215 ℃,screw speed 8 r·min-1,nozzle temperature 230 ℃,and print platform temperature 45 ℃. The best molding process parameters were verified by printing tire and honeycomb model.