To determine whether a patient has a shoulder ligament strain, the patient needs to be based on the history of trauma, symptomatic manifestations, and auxiliary examinations, as follows: I. History of trauma: There should be a clear history of trauma. Symptoms: There is obvious local pain, and the pain is often more intense when pressing on the area, and may even affect the patient’s shoulder joint activities, such as abduction, external rotation, and posterior extension. Auxiliary examinations: Some auxiliary examinations are needed, such as local X-ray and MRI of the shoulder joint, which can clarify the diagnosis of shoulder ligament strain. For patients with relatively mild ligament strain, they should choose to actively carry out conservative treatment, suspend the affected limb for protection, avoid premature shoulder lifting exercises, reduce local stimulation, and apply topical ointment to activate blood circulation and remove blood stasis, and they will recover slowly.