In general, if a patient appears to go up the stairs too much and black in front of the eyes, the following points should be considered: First, consider the hypoglycemic reaction, especially for patients with a clear history of diabetes, if the exercise is too much and there is no timely replenishment of sugar after exercise, there will be black in front of the eyes, accompanied by palpitations, cold sweat, weakness, pale face and other clinical symptoms. Second, for patients with a history of hypertension, when exercising too much, especially when the load increases, the patient will experience a mobile and fluctuating increase in blood pressure, which will result in blackness, dizziness, headache, accompanied by darkness, and in severe cases, transient loss of consciousness. Third, for patients with a history of coronary heart disease, climbing too many stairs will also lead to an increase in the load on the heart, and patients will suffer from myocardial ischemia and lack of oxygen, resulting in the above clinical symptoms.