Numbness and dizziness of the index and middle fingers of the left hand may be cervical spondylosis, atherosclerosis, cerebral infarction, etc., which can be treated with medication, physiotherapy and surgery. 1. Cervical spondylosis: Neurogenic cervical spondylosis, spinal cord cervical spondylosis combined with neurogenic cervical spondylosis will lead to numbness of the upper limbs, weakness of the hands, dizziness and other symptoms. It can be relieved by traction, massage, acupuncture, physiotherapy, etc. Surgical treatment, such as cervical spinal canal enlargement plasty, is necessary. 2. Atherosclerosis: Atherosclerosis affects the blood flow to the head, and when there is localized narrowing, such as cervical stenosis, it will lead to insufficient cerebral blood supply to cause dizziness, while narrowing of the distal end of the limb will cause numbness of the fingers. Drugs such as atorvastatin and rivastigmine can be used to stabilize plaques, while antiplatelet drugs such as clopidogrel and aspirin can be used to prevent thrombosis. 3. Cerebral infarction: local thrombus will lead to blood circulation obstacle, make limited brain tissue ischemia, sexual necrosis or softening, leading to focal damage, may appear dizziness and limb numbness symptoms. Thrombolytic therapy, such as alteplase, is needed as soon as possible, and neuroprotective drugs, such as cytarabine and edaravone, are used to reduce neurological damage. Numbness and dizziness of the left index finger and middle finger should be treated as soon as possible, so as to make a clear diagnosis and regular treatment, and should not use drugs indiscriminately.