Dizziness and walking to the left are mainly seen in lesions of the left cerebellar hemisphere, including cerebral hemorrhage, cerebral infarction and cranial tumors. If the patient has a left-sided brain tumor, the patient may experience dizziness, nausea, vomiting, walking to the left, or ataxia. It may also be caused by cerebral hemorrhage or cerebral infarction on the left side. Cerebral hemorrhage and cerebral infarction are acute cerebrovascular diseases, which usually have an acute onset and may suddenly present with dizziness, nausea, vomiting, falling to the left, etc. They may also present with balance disorders, dysarthria, and ataxia, etc. Cranial CT examinations can make a clear diagnosis.