Upper arm pain can be caused by muscle damage due to over-exercise, etc., but it can also be caused by cervical spondylosis, frozen shoulder, and other diseases. Specific treatments are as follows: 1. Muscle injury: if the patient lifting heavy objects excessive exercise, etc. resulting in muscle injury. Conservative treatment is generally adopted, such as local hot compresses on towels to improve blood circulation and relieve pain symptoms. If conservative treatment is ineffective, drugs can also be used, such as diclofenac diethylamide emulsion. 2. Cervical spondylosis: mainly neurogenic cervical spondylosis, compression of the nerve root, there may be radioactive pain in the upper limbs. First of all, patients should improve their living habits and avoid prolonged head-down work. If the conservative treatment is ineffective or the symptoms are more serious, patients can choose surgical treatment, such as anterior surgery and posterior surgery. 3. Frozen shoulder: The pain area of frozen shoulder is wider, involving the upper arm, but generally not exceeding the elbow joint. Clinically, we can improve the blood circulation of the shoulder and reduce muscle spasm through functional exercises to relieve pain, such as wall climbing method, circling method, pulling the wheel method and so on. When the symptoms are serious, drugs can be used, such as etoricoxib tablets. Patients are advised to seek medical treatment in time, and the above drugs should be used under doctor’s guidance.