3D printing (3DP) is a rapid prototyping technology, also known as additive manufacturing [1]. It is a technology based on digital model file, using adhesive materials such as powder metal or plastic, and constructing objects by printing layer by layer. . 3D printing is usually realized by digital technology material printer. It is often used in mold manufacturing, industrial design and other fields to make models, and then gradually used in the direct manufacturing of some products. Parts already printed with this technology. This technology has been applied to jewelry, footwear, industrial design, architecture, engineering and architecture (AEC), automobile, aerospace, dentistry and medical industry, education, geographic information system, civil engineering, guns and other fields.