Abstract: The effects of molding temperature and print height on the warpage deformation of the 3D printed part were investigated by using polycaprolactone (PCL) as a raw material. The mechanical properties of 3D printing molded parts were evaluated and compared with those of the injectionmolded part. The results indicated that the warping deformation of the 3D printed part increased at first and then decreased with the improvement of molding temperature and print height. Moreover, the 3D printing molded part achieved much higher tensile strength, flexural strength and elongation at break than the conventional injectionmolded one.