Objective To sketch out the clinical application of 3D printing technology based on MRI of Orthopedics and Traumatology Department by means of literature retrieval,in order to provide a scientific basis for promoting the development of precise medical treatment in Orthopedics and Traumatology Department.Methods The databases of China National Knowledge Internet(CNKI),Wanfang and VIP were retrieved from January 1,2015 to September 30,2019,and key words were "3D printing" "three-dimensional printing" "additive manufacturing" "magnetic resonance" "magnetic resonance imaging".A total of 18 literatures related to Orthopedics and Traumatology Department were included in the review.Results 3D printing technology based on MRI was mainly used in the diagnosis and treatment of clinical diseases and clinical teaching in Orthopedics and Traumatology Department.Conclusion 3D printing technology based on MRI can not only be used for surgical preoperative planning,assisted determination of operative plan,but also printing individualized guides,prostheses and implants to improve the effect of orthopaedics and traumatology surgery.