Nifedipine belongs to calcium channel blocking drugs and is commonly used clinically for the treatment of angina pectoris, especially variant angina pectoris and angina pectoris caused by coronary artery spasm, in addition to angina pectoris, hypertension, coronary heart disease, and chronic stable angina pectoris. The main mechanism of action of nifedipine is to block the entry of calcium ions into the cells via slow channels, or to inhibit selected vascular smooth muscle and myocardial depolarization voltage sensitive areas, causing coronary vasodilation, reducing peripheral vascular resistance, making blood pressure summer that also inhibits myocardial contraction and reduces myocardial oxygen consumption. During nifedipine drug therapy, attention needs to be paid to the close monitoring of blood pressure and heart rate. For different types and sizes of nifedipine, the dosage needs to be administered according to the specific drug instructions. The dose of nifedipine should be adjusted gradually according to the patient’s tolerance and control of angina pectoris. Overdose of nifedipine may lead to hypotension.