There are many causes of sudden dizziness, and symptomatic treatment is needed according to the specific cause. If the dizziness is caused by cervical spondylosis or cervical hyperplasia, it can be relieved by drugs and local physical therapy first. If the sudden dizziness is caused by hypertension or hyperglycemia, it is necessary to take some antihypertensive and hypoglycemic drugs under the guidance of a doctor in a timely manner, and to avoid excessive consumption of salty and sweet foods. If sudden dizziness is caused by hypoglycemia or hypotension, you can carry some sugary food with you and pay attention to rest and nutrition, and do not squat or get up too hard or fast. 4. If the sudden dizziness is caused by anemia, you need to go to the hospital for blood test to check the degree of anemia and the type of anemia, and then carry out symptomatic treatment. 5, sometimes heart disease can also cause sudden dizziness, this time you need to go to the hospital to do electrocardiogram or cardiac ultrasound, cardiography to determine whether there is heart disease and the type of heart disease, and then the symptomatic treatment. 6, ear disorders can cause obvious dizziness, mostly manifested as vertigo, spinning, sometimes accompanied by tinnitus, in severe cases with nausea and vomiting, can be related to position changes, the patient should remain quiet, try to keep the head still to prevent accidental aspiration. 7, acute cerebrovascular disease, especially posterior circulation ischemia can cause obvious dizziness, the patient can be accompanied by other symptoms, such as limb weakness, double vision, etc., should promptly go to the hospital. Therefore, the appearance of sudden dizziness should be taken seriously, but can not be treated blindly, need to go to the hospital in a timely manner for relevant examination to clarify the cause, and then treat the symptoms.