Arm pain is considered to be muscle strain at the arm, upper extremity osteophytes, nerve root cervical spondylosis and other reasons, need to be specifically analyzed. 1. Muscle strain: muscle strain at the arm is caused by various reasons. Due to its excessive force can easily lead to muscle spasm and edema. If it gets cold, the symptoms will be more obvious. Patients will feel sleepy, pain, soreness and other symptoms in the arm, which are more obvious when resting. 2. Upper limb osteophytes: due to long-term wear and tear, muscle stimulation and other compensatory changes in the bone quality of the upper limb area. Osteomalacia is formed by the body’s self-protection and repair, and is the result of aging of human bone and joint. Clinical symptoms of pain or movement disorders are often manifested. Patients may feel pain in their arms. 3. Neurogenic cervical spondylosis: In patients with neurogenic cervical spondylosis, the cervical vertebrae will compress the nerve roots, leading to a weakening of nerve root conductivity, which may cause muscle spasms in the arms, resulting in symptoms of sleepiness, pain, and numbness. When the symptoms of arm sleepiness and pain occur, it is recommended that patients seek medical attention to confirm the cause of the disease, and under the guidance of the doctor to carry out targeted treatment.