Abstract For the semi-cylindrical model, orthogonal experiments and range analysis methods are used to explore the effects of four process parameters, namely layer thickness, printing speed, nozzle temperature, and bottom plate temperature, on the cross-sectional profile error and height error of FDM type 3D printing. This paper summarizes the optimal process plan for various errors and the significance of their impact, providing a certain reference for the coupling mechanism and significance research of process parameters.