Aim To evaluate the correlation of the plaque composition，morphology and degree of coronary artery stenosis with the clinical types of coronary heart disease. Methods 35 cases received dual-source CT （DSCT） coronary angiography and intravenous ultrasound （IVUS） examination in one month were collected from March，2008 to October，2010. The patients were divided into acute coronary syndrome （ACS） and stable angina pectoris （SAP） groups，according to clinical standards. Among 35 cases，there were 25 with ACS，10 with SAP. With the IVUS as the reference standard，DSCT was performed to measure the plaque composition and the degree of coronary artery stenosis，and to evaluate remodeling index （RI） and eccentric index （EI） of plaques. Results There were 105 vascular branches in 35 cases，including 59 branches in total of 200 segments with lesion vessels. Evaluable 146 segments with lesion vessels had a good consistency in RI and EI （P>0.05）. There was a significant difference between ACS and SAP groups in the number of lipid and calcified plaques （P<0.05）. The lipid plagues accounted for great proportion in ACS group and calcified plaques in SAP group. There was significant difference between RI and EI of plaque for the two groups （P<0.05）.In 130 stenosed segments，there was no statistic difference in the degree of artery stenosis between ACS and SAP groups（P>0.05）. Conclusion Compared with SAP，most of the segments with ACS are detected to have lipid plaque，eccentric distribution and positive remodeling by DSCT.