The causes of frequent and sudden dizziness are mainly considered in the following aspects: firstly, if it occurs when the patient gets up, it should be considered as postural hypotension, usually the patient’s blood pressure fluctuates below 20mmHg from the lying position to the standing position, which will cause the patient to have transient dizziness, which may be accompanied by blackness in front of the eyes, and the symptoms of starry eyes. Secondly, frequent dizziness that can be relieved immediately should be considered to be caused by transient ischemic attack. The main reason for this situation may be the presence of severe narrowing of large blood vessels in the brain, when some reasons trigger the easy vascularization and transient cerebral blood supply insufficiency. The third aspect, the head often suddenly dizzy can be good may also be caused by heart disease, such as premature heartbeat.