[Objective] To compare the efficacy of clavicular hook plate and arthroscopic suspension around coracoid in the treatment of acromioclavicular joint dislocation. [Methods] The clinical data of 21 patients with acute closed acromioclavicular joint dislocation admitted to our hospital from January 2018 to June 2021 were retrospectively analyzed. According to the results of doctor-patient communication, the patients were divided into suspension group (21 cases) and hook plate group (34 cases), and the clinical and imaging results of the two groups were compared. [Results] Both groups successfully completed the operation. Intraoperative blood loss [(9.8±4.9)ml vs (35.9±11.3)ml, P<0.05],and length of incision [(4.1±0.6)cm vs (7.2±1.3)cm, P<0.05], in suspension group were significantly lower than those in hook plate group (P<0.05), and the operation time [(89.1±18.7)min vs (61.7±12.5)min, P<0.05] was significantly longer than that of the hook plate group (P<0.05). VAS scores of both groups were significantly decreased over time after surgery (P<0.05). ASES score and Constant-Murley score increased significantly (P<0.05). 6 months after surgery, VAS score [(1.1 ± 0.7) vs (1.8 ± 0.9), P<0.05], ASES score [(91.2 ± 3.1) vs (80.1±4.8), P<0.05] and Constant-Murley scores [(90.7 ± 5.5) vs (80.2± 7.4), P<0.05] were significantly better than those of hook plate group (P<0.05). 6 months after operation, ACD and CCD decreased significantly in both groups (P<0.05). At the corresponding time points, there were no significant differences in ACD and CCD between the two groups (P<0.05). [Conclusion] Compared with clavicular hook plate, the treatment of acromioclavicular dislocation by suspension around the coracoid under arthroscopy can reduce postoperative shoulder pain and is more conducive to the functional recovery of shoulder joint, which is a recommended method.