Abstract: This paper introduces Professor Shi Zaixiang's clinical experience in treating angina pectoris after percutaneous coronary intervention(PCI) with qi sinking and blood stasis syndrome. It is believed that the pathogenesis of angina pectoris after PCI with qi sinking and blood stasis syndrome is pectoral qi sinking and blocking collaterals. The key to syndrome differentiation lies in pectoral qi sinking. It is suggested that the treatment should be based on raising the sunken and removing blood stasis. However， it should not only supplement qi， but also be used together with raising drugs， so that the pectoral qi can rise and fill the chest， and the qi can flow through the blood smoothly without pain.