The common causes of numbness and swelling of fingers are as follows: First, the formation of venous thrombosis in the upper arm can cause obstruction of venous blood flow in the hand, and more blood and metabolic wastes can accumulate in the fingers and cause numbness and swelling, patients can promote faster dissolution and absorption of thrombosis in the upper arm by subcutaneous injection of enoxaparin, oral rivaroxaban, intravenous application of blood plug, prostil and other drugs to restore blood flow and reduce the symptoms of numbness and swelling of fingers. Patients with cervical spondylosis can have numbness and swelling of the upper limbs due to the compression of the spinal nerve by the herniated disc, so they can improve the magnetic resonance examination of the cervical spine and perform surgery to release the nerve compression after clarifying the nature of the lesion, thus effectively reducing the symptoms related to numbness and swelling of the fingers.