The cause of numbness in the fingers is first considered to be peripheral neuropathy, peripheral neuropathy is clinically common in diabetic peripheral neuropathy. Due to the patient’s high blood sugar, resulting in damage to the peripheral nerves, the patient can appear numbness of the fingers, and in severe cases, there will be numbness of the endings of the limbs, if necessary, you can check the electromyography, for the numbness of the fingers caused by diabetes, it is recommended that the patient’s strict control of blood glucose, you can orally take nutritive nerve drugs, such as methylcobalamin. Secondly, the peripheral neuropathy of numbness of the index finger can also be seen due to toxins, such as organophosphorus or pesticide-induced demyelination of the peripheral nerves, for the peripheral neuropathy caused by, it is recommended that the patient can orally take nutritive nerve drugs, such as vitamin B12, and improve microcirculation of the drug can be used if necessary. Then numbness of the fingers can also be seen in cervical spondylosis, due to cervical disc herniation leading to nerve root compression, the patient can appear numbness of the fingers, usually accompanied by numbness of the upper limbs, hand weakness, etc., if necessary, you can check the cervical spine of the CT or MRI to confirm the diagnosis.