Usually when you get up, the cause of dizziness has the following categories: 1, the most common factor is upright hypotension, also known as postural hypotension, belongs to the performance of abnormal blood pressure regulation, especially common in the middle-aged and elderly people, belongs to the dizziness caused by the fluctuation of blood pressure; 2, other factors, for example, patients with obvious serious cervical spondylosis, can also lead to dizziness when the patient gets up; 3, blood volume insufficiency, for example, when patients experience Acute gastroenteritis dehydration, dehydration caused by heat stroke in the summer or severe bleeding, burns, will trigger blood volume insufficiency, will also appear dizziness; 4, long-term adverse reactions to drugs, such as taking diuretics, antihypertensive drugs, antidepressant drugs, will also have this symptom; 5, within the environment and homeostatic regulation of the function of the weakening of the heart, for example, chronic cardiac insufficiency, will lead to get up when the dizziness.