The prevalence of coronary heart disease（CHD）has been rising annually in recent years. One of the most successful treatment options for CHD is percutaneous coronary intervention. In the era of precision medicine，only coronary angiography⁃guided PCI cannot meet the needs of patients for high postoperative survival rate and good living ability. IVUS can provide more accurate and comprehensive information about blood vessels and stents，compensating for many of the shortcomings of coronary angiography（CAG）. In addition，IVUS⁃guided PCI can reduce the amount of contrast agent used，reducing renal injury in patients. The main functions of IVUS include assessing the coronary stenosis or myocardial ischemia，judging the coronary plaque，guiding and optimizing stenting，and so on. Compared with CAG⁃guided PCI，IVUS⁃guided PCI can significantly reduce the mortality of CHD patients and improve their prognosis. However，with the exception of Japan，the IVUS⁃guided PCI application rate is still low. This paper examines the utility and progress of IVUS⁃guided PCI in order to promote its global adoption.