Soreness and weakness in the arms are usually seen for the following reasons: a. Because of heavy physical work in the upper limbs, or repeatedly doing a movement, which leads to muscle strain and inflammation of the fascia, and then pain. The pain is mainly soreness and can be induced in the muscle area when pressed with the hand, but can be comfortable when tapped with the hand, which is typical of myofascial strain. In this case, we should pay attention to rest, and if necessary, we can cooperate with drug treatment, mainly using non-steroidal anti-inflammatory and analgesic drugs. Second, because of cervical diseases, such as cervical disc herniation or cervical spondylosis compression nerve, resulting in the muscle of the innervated area of radioactive pain or numbness and weakness, should actively improve the cervical MRI examination, to clarify the direction of the herniated disc and the degree of protrusion, according to the condition to choose the appropriate treatment plan. Third, because of brain diseases, general brain diseases usually need to improve the CT or MRI examination, and then choose the appropriate treatment plan.