Dizziness and numbness of tongue are as follows: first, consider brain lesions, if the patient is sudden dizziness and numbness of tongue, consider that cerebrovascular disease is common, mainly seen in the vascular lesions of the brain stem, which can be seen in ischemic diseases of the brain stem, and can also be seen in the brain stem of the micro hemorrhage. It is recommended to give the patient a head CT or nuclear magnetic examination to confirm the diagnosis of ischemic cerebrovascular disease, treatment can be given to anti-platelet aggregation, activate blood stasis, improve circulation and other symptomatic treatment, and confirm the diagnosis of hemorrhagic cerebrovascular disease, can be given to the conservative or if necessary, surgical treatment. Secondly, dizziness and numbness of tongue, if the disease is slowly progressing, can also be seen in intracranial space-occupying disease, and tumors in the posterior cranial fossa are common, and the patient can also be accompanied by headache, and nausea, vomiting and other symptoms will occur in severe cases. The diagnosis can be confirmed by head CT or nuclear magnetic examination, and the treatment can be conservative or surgical and other symptomatic treatments according to the location and nature of the lesion.