This research was to investigate the therapeutic efficiency on the pain symptom in patients with scapulohumeral periarthritis through semi-conductor laser treatment.Ninety one patients with scapulohumeral periarthritis were divided into two groups according to random numbers table method,treatment group and control group.The patients in the treatment group were treated with semi-conductor laser therapy based on the routine treatment.After being treated,total efficiency in treatment group was higher than that in the control group,and in analgesia aspect, the ache had been lighted apparently as compared with the control group.The semi-conductor laser therapy has distinctly ameliorative action on the ache symptom.