Abstract:  In recent years， 3D printing technology has been widely applied in the field of medicine， especially in the area of bone tissue engineering. 3D printing technology is capable of integrating different types of living cells into threedimensional structures composed of traditional micro- or nano-scale biomaterials， thereby creating artificial bone implants capable of regenerating damaged tissues. This technology enables the customization of the shape and size of bone implants according to the specific needs of patients， as well as the adjustment of material mechanical properties and pore structures to promote cell attachment， proliferation， and bone tissue regeneration. Such personalized treatment methods can provide patients with improved therapeutic effects and functional recovery. This review introduced several commonly used 3D printing methods and materials for bone substitutes， with a particular focus on their technical applications in bone repair and regeneration， aiming to familiarize readers with the latest developments and prospects of this technology in the field of bone tissue engineering.

Key words: 3D printing, &emsp, Artificial bone, &emsp, Bone tissue engineering, &emsp, Bone repair