Objective To analyze the traditional Chinese medicine（ TCM） syndromes and related factors of patients with coronary heart disease（ CHD） after percutaneous coronary intervention（ PCI）. Methods A total of 801 patients with CHD who underwent PCI were selected. Retrospective study was conducted based on their original medical records and angiography data to explore the distribution pattern of TCM syndromes and to analyze the correlation between basic characteristics of patients and TCM syndromes. Results In the 801 cases

qi deficiency and blood stasis syndrome occurred in 298 patients（ 37. 20%）

followed by qi and yin deficiency syndrome occurred in 163 patients（ 20. 35%）

stagnant blockage of heart blood syndrome occurred in 126 patients（ 15. 73%） and phlegm and blood stasis syndrome occurred in 95 patients（ 11. 86%）. The correlation analysis showed gender（ male） was correlated with heart blood stasis syndrome

qi and yin deficiency syndrome and heart and kidney yin deficiency syndrome

and age（ ≤65 years old） was associated with heart blood stasis syndrome

qi deficiency and blood stasis syndrome

phlegm and blood stasis syndrome

cold congeal and blood stasis syndrome and qi and yin deficiency syndrome. Chronic kidney dysfunction was correlated with heart blood stasis syndrome

qi deficiency and blood stasis syndrome

phlegm and blood stasis syndrome

cold congeal and blood stasis syndrome and qi and yin deficiency syndrome

and blood lipid disorder was related with phlegm and blood stasis syndrome. ST-segment elevation myocardial infarction was associated with qi and yin deficiency syndrome. Unstable angina was associated with qi deficiency and blood stasis syndrome

qi and yin deficiency syndrome（ P < 0. 05）. Conclusion Qi deficiency and blood stasis syndrome was the major TCM syndrome after PCI. Correlation analysis showed that male patients under 65 years old with unstable angina were more prone to qi deficiency and blood stasis syndrome; patients with blood lipid disorder were more prone to have phlegm and blood stasis syndrome

and patients with ST-segment elevation myocardial infarction or unstable angina were more prone to have qi and yin deficiency syndrome.