Numbness of three fingers of the left hand may require vigilance carpal tunnel syndrome, elbow tube syndrome, cervical disc herniation and other diseases, it is recommended to consult a doctor in time to clarify. 1. Carpal tunnel syndrome: a series of symptoms and signs caused by the compression of the median nerve in the wrist. If the numbness of the three fingers of the left hand refers to the numbness of the thumb, finger and the tip of the middle finger, then it may be due to the carpal tunnel syndrome caused by the damage of the median nerve. 2. Elbow canal syndrome: a chronic injury caused by the ulnar nerve being compressed in the ulnar nerve groove of the elbow, if the patient’s middle finger, ring finger and three fingers of the little finger have numbness, accompanied by forearm numbness, swelling and pain, it may be due to the ulnar nerve damage caused by the elbow canal syndrome. 3. Cervical disc herniation: it is a series of symptoms caused by cervical disc degeneration and compression of nerves and blood vessels, which may result in poor blood flow and numbness of the limbs, etc. Therefore, the patient’s three fingers on the left hand are numb. Therefore, the numbness of three fingers on the left hand of the patient can also be considered to be caused by cervical disc herniation. The symptoms of numbness of the fingers, it is recommended to consult a doctor in a timely manner to clarify the diagnosis, and if necessary, the appropriate treatment should be carried out.