Traumatic complete dislocation of teeth means that the affected tooth is dislocated from the alveolar socket, the tooth is completely dislocated or has a little soft tissue attached, often accompanied by gingival tear and alveolar bone fracture, mostly a single tooth. The anterior teeth are located in the most prominent position in the front of the mouth, so they are vulnerable to dislocation by violence during trauma. The traditional treatment is metal wire ligation fixation or arch splint fixation. However, there are features such as strong foreign body sensation, poor oral hygiene, damage to periodontal tissues, and poor fixation effect of young permanent teeth due to short crowns. With the development and progress of medical technology, orthodontic straight arch technique is gradually applied in the treatment of traumatic dislocation of permanent anterior teeth. In order to investigate the clinical effect of orthodontic straight arch technique and arch splint fixation in the treatment of traumatic dislocation of permanent anterior teeth, we conducted a comparative study. Through the study, we believe that the application of orthodontic straight arch technology in the treatment of traumatic dislocation of permanent anterior teeth improves the retention rate of the affected teeth, the method is simple and easy to implement, the gingival damage is small, the foreign body sensation is small, the treatment time is short, it is easy to maintain oral hygiene, the patient is easy to accept, it is better than the traditional treatment method, and the effect is obvious, which is a more ideal method of fixation in clinical practice, and it is worth to be promoted.