The severity of coronary artery disease is closely related to the prognosis of patients with coronary heart disease, and it is also an important influencing factor in the development of clinical management strategies for these patients. At present, a series of coronary scoring systems have been developed in order to quantitatively assess the severity of coronary atherosclerotic lesions based on the results of coronary angiography or coronary computed tomography angiography in order to evaluate the prognosis of the patients and guide clinical treatment. Different scoring systems have their own advantages, disadvantages and application scopes. The article reviews different scoring systems, and hopes that it will be helpful to understand the characteristics and application scope of the systems so as to better evaluate the prognosis of patients and formulate more beneficial treatment strategies.