3D printing technology has a wide range of applications in the medical field, one of which is for bone reconstruction and repair. Through 3D printing technology, artificial bone tissue or implants of various shapes, sizes, and materials can be produced. These implants can be used to replace damaged natural bones, resulting in relatively significant effects on bones. First of all, 3D printing technology can be personalized designed and manufactured according to the specific situation of the patient, enabling the repaired implant to better adapt to the physical characteristics of the patient, achieving better improvement and treatment effects. In addition, 3D printing can generate implants with internal irregular structures (such as grid shaped, honeycomb shaped, etc.) that can promote the attachment of biomaterials and the growth of bone cells, accelerating bone healing. Secondly, 3D printing technology can enable doctors and patients to better understand the shape and structure of implants, thereby improving communication and collaboration, and improving the accuracy of surgical treatment. Similarly, 3D printing technology can also generate virtual simulation models through which doctors can conduct surgical planning and demonstration, reducing the risk and difficulty of surgery. Finally, because 3D printing technology can use a variety of different materials, it is possible to manufacture various implants, including metals, plastics, ceramics, and so on. These materials have their own characteristics and can play an important role in bone repair and reconstruction. For example, metal implants can provide better mechanical support and structural stability, while ceramic implants have better biocompatibility and corrosion resistance.