In this paper, a composite scanning method combining high energy density contour carbonization with high energy density contour bonding is proposed, and the proposed method and ordinary scanning method are used to implement sintering experiment. The tensile fracture, tensile strength, forming accuracy and deformation are studied. The results show that the composite scanning method can effectively remove the secondary sinter, improve the precision and initial sintering strength of the sinter, and reduce the deformation in the process of post-treatment heating strengthening. At lase, sintered parts with high precision and high performance are obtained.