This symptom is seen in cervical rib syndrome. Cervical rib syndrome is a complex clinical syndrome caused by the compression of important vascular nerves in the thoracic outlet area, also known as cervicothoracic outlet syndrome, anterior oblique muscle syndrome, pectoralis minor syndrome, rib lock syndrome, excessive abduction syndrome, etc. It is a general term for a series of vascular and neurological symptoms of the upper limbs caused by the compression of the brachial plexus nerve and subclavian artery at the outlet of the upper thoracic outlet for some reasons. The main clinical manifestations are pain and numbness in the shoulder, arm and hand, or even muscle atrophy and weakness, bruising and coldness in the hand, and weakened radial artery pulsation. Cervical rib syndrome is a congenital disease with no effective preventive measures. Early diagnosis and treatment is the key to prevention and treatment of this disease, but it should be noted that not all people with cervical ribs will have symptoms, and conservative treatment should be chosen first, and then surgical treatment should be taken when conservative treatment has no effect to avoid unnecessary damage to the patient. Observe the condition closely to prevent the ischemia of the limb from aggravating; take all measures to reduce the pressure on the nerves and blood vessels; strengthen health education and encourage the patient to actively cooperate with the treatment. If the symptoms are mild and there is no nerve injury, rehabilitation therapy can be tried: appropriate rest, suspension of the affected limb, no heavy lifting, shoulder shrugging activities, local hot compresses, massage, and nufcaine closure of the anterior oblique muscles. If the symptoms worsen and affect life and work, surgery should be performed; appropriate sports therapy and physical therapy should be given to maximize the recovery of function.