Abstract: Objective To study the therapeutic effect of combined clavicular hook plate and coracoclavicular ligament reconstruction on dislocation of acromiclavicular joint. Methods Forty patients with dislocation of acromioclavicular joint admitted to our hospital from June 2008 to April 2011 were divided into study group(n=20) and control group(n=20).Patients in study group were treated with combined clavicular hook plate and coracoacromial ligament reconstruction while those in control group were treated with combined clavicular hook plate and tension belt to observe their therapeutic effect. Results The shoulder function of patients in two groups before and after operation was assessed according to the Lazzcano standards,which was significantly better after operation than before operation(P<0.05).The excellent rate of shoulder function was significantly higher in study group than in control group after operation(P<0.05).The incisions healed quite well with no screw loosening and fracture. Conclusion Combined clavicular hook plate and coracoclavicular ligament reconstruction is a safe and effective procedure for dislocation of acromioclavicular joint with a higher excellent rate than that of combined clavicular hook plate and tension belt.