Patients always feel dizziness, nausea and vomiting for many reasons. It is recommended that patients consult a hospital to improve the examination to clarify the cause: 1. To consider that it is caused by some serious diseases, if it is intracranial tumor, intracranial occupancy, patients will have continuous dizziness, nausea and vomiting, and it will gradually progress and worsen; 2. Patients always have dizziness, nausea and vomiting, to consider that it is caused by some internal system diseases, such as hypertension, hypotension or hyperglycemia and other causes. It may also be related to cervical spondylosis, which leads to insufficient blood supply to the brain after the patient’s bilateral vertebral arteries are compressed. There are also heart diseases, such as arrhythmia, frequent premature ventricular contractions, episodic atrial fibrillation and other problems, which can cause patients to have dizziness, nausea and vomiting symptoms. 3. The most common cause is the elderly, and also consider cerebral arteriosclerosis and insufficient blood supply to the brain.