Squatting for a while to stand up dizziness and black eyes, may be due to postural hypotension, anemia and other reasons. 1. Postural hypotension: squatting for a while and then stand up, due to the position from high to low, the blood pressure can not regulate in time, the body will appear postural hypotension, resulting in a transient insufficient blood supply to the brain, so the symptoms of dizziness, black eyes. The best way to relieve this situation is to continue to squat or sit down and rest for a while. It is recommended not to squat for too long, but to stand up slowly and not to get up too violently. 2. Anemia: When anemia occurs, hemoglobin and red blood cells are lower than normal, and the oxygen-carrying capacity of the blood is also lower. When squatting down, the blood is concentrated at the bottom of the body, and when standing up, the blood is still gathered at the bottom, and at this time, the head is at the highest point, which will cause cerebral ischemia and retinal ischemia, and then dizziness and black eyes will occur. It is recommended that patients usually strengthen the nutrition, under the guidance of the doctor to supplement iron, folic acid, vitamin B12 and other drugs. If the symptoms of squatting for a while and standing up dizziness and black eyes occur frequently, it is recommended to go to the hospital for examination and treatment under the guidance of the doctor after clarifying the cause of the disease.