After the blood flow of the main blood vessel (artery or vein) in a certain part of the body is blocked, the blood vessels of the original anastomotic branch of the part expand and form bypasses, so that the blood passes through these bypasses in a roundabout way and restores the circulation, this circulatory pathway is called “collateral circulation”, also called “compensatory circulation This circulatory pathway is called “collateral circulation”, also known as “compensatory circulation”. Insufficient development of collateral circulation means that these bypasses are not sufficiently developed, which still affects circulation and can cause various cardiovascular diseases. There are mainly coronary artery collateral circulation, portal vein collateral circulation, cerebral artery collateral circulation and aortic collateral circulation, which should be differentiated from each other. If the collateral circulation is underdeveloped, it can cause related diseases. Chest X-rays are the most valuable routine imaging method, providing important indications and reflecting coexisting pulmonary lesions. The typical presentation is a small arterial vascular shadow on the affected side. What can be done to prevent the development of hypoplastic collateral circulation? Patients with poorly developed collateral circulation need to maintain an optimistic and happy mood. Long-term mental tension, anxiety, irritability, pessimism and other emotions will cause the balance of cortical excitation and inhibition processes to be imbalanced, so it is necessary to maintain a happy mood. The main treatment is interventional therapy. The externally passed occluded coronary artery can also serve as a blood supply vessel to provide collateral circulation to other occluded vessels to reduce the patient’s risk. Interventional treatment of externally passed occluded coronary arteries also serves as a blood supply vessel to provide collateral circulation to other occluded vessels in order to reduce the risk to the patient. Disease progression is slow. The early stage is usually asymptomatic, with occasional symptoms such as headache and dizziness, palpitations, poor concentration, memory loss, fatigue, and irritability; many patients are only found to have elevated blood pressure on physical examination.