Cardiac interventional therapy is a method of treating heart disease by entering the human heart and large blood vessels through special equipment such as catheters under DSA. Because it requires only local anesthesia, is easy to operate, does not require open-heart surgery and general anesthesia, and has many advantages such as less pain for patients, less risk, faster recovery after surgery, and can quickly achieve revascularization and unblock occluded blood vessels in emergency situations (such as acute myocardial infarction), its application is becoming increasingly widespread and its scope is gradually expanding to various fields of cardiology, and currently common heart diseases such as angina pectoris and myocardial infarction can be cured through cardiac interventional therapy.