The causes of dizziness when a person squats and stands up are as follows: First, consider the presence of postural hypotension, generally seen in young women, due to the usual low blood pressure, squatting and standing up after a transient ischemia of the head, appearing dizzy. Second, dizziness when standing up from squatting is seen in some middle-aged and elderly patients, due to atherosclerosis, poor vascular elasticity, prolonged squatting can lead to blood pooling in the lower extremities, when standing up there is a transient ischemia of the head, the patient manifests as dizziness. Third, people squatting when standing up dizziness, clinically can also be seen in some patients with abnormal autonomic function, such as Parkinson’s disease, multi-system atrophy, etc. resulting in impaired autonomic function, hypovascular diastolic function and other postural hypotension, the patient squatting when standing up dizziness is more obvious, and in serious cases, falls, etc.