To explore characteristics of TCM syndrome and syndrome types in patients with unstable angina， and to provide basis for clinical treatment application.Methods： The general information of patients was recorded including height and weight; a TCM questionnaire was adopted to collect information on four diagnostic and calculate the scores. A cluster analysis was conducted to summarize main syndrome types. Results： Among the 300 cases of patients involved in the symptom survey， the top 10 most frequents symptoms were as follows： chest pain（96.0%）， heavy heart stuffy（81.7%）， expectoration and air hunger（73.3%）， white and greasy tongue coating（67.0%），obesity（60.0%）， heart palpitations（57.3%），perspiration（55.3%），cough spit saliva（46.7%），bulgy tongue（45.3%），tongue dark purple（43.3%）.Cluster analysis showed that among the 300 cases of patients， 180 cases were the type of accumulation of phlegm debility patients，80 cases were the type of heart blood stasis debility patients， 40 cases were type of heart stasis due to cold resistance. Conclusion： Unstable angina is a disease with root deficiency and tip excess， especially common with the syndrome of phlegm turbidity obstruction.