The clinical symptoms of cervical muscle strain include neck pain, limited cervical spine activity, and other symptoms, as follows: First, neck pain: muscle strain stimulates the nerves, which will cause muscle pain, mainly due to the accumulation of lactic acid, after massage, massage, the symptoms will be relieved soon. Second, limited cervical spine activity: after the neck muscle strain, the muscle will have obvious spasm, tension and stiffness, then the cervical curvature changes, cervical spine activity will be limited, mainly including cervical flexion and extension activities and rotational activities. Third, other symptoms: patients have dizziness, nausea and other clinical symptoms, cervical muscle strain makes the cervical curvature straightened or reverse arch, thus affecting the blood supply of the vertebral artery, the patient in the turn of the head will be induced dizziness, nausea, chest tightness, panic, and even vision and hearing loss and other clinical symptoms. Therefore, neck muscle strain should be diagnosed and treated at an early stage to avoid severe cerebral blood supply insufficiency and other symptoms.