Dyspnea can occur due to lack of oxygen, and lack of oxygen can lead to increase in heart rate. When patients have dyspnea, they should actively seek medical attention, improve relevant examinations, clarify what kind of disease is the cause of the above clinical manifestations, and take appropriate treatment: 1. If patients have dyspnea due to asthma, they should be given oral montelukast sodium, inhaled budesonide formoterol, and in the acute attack period, inhaled fast-acting bronchodilators, such as ipratropium salbutamol, etc. 2, If the patient’s dyspnea is caused by cardiac insufficiency, cardiopulmonary, diuretic and vasodilator therapy should be given according to the condition, such as cetiran, furosemide, nitroglycerin, sodium nitroprusside, etc.