Objective To evaluate the impact of Chinese medical syndrome on in-hospital outcomes in patients with acute myocardial infarction(AMI).Methods The data of 142 patients hospitalized with AMI were collected from the database of Fujian provincial people's hospital between June 2009 and May 2012.The patients were categorized into 4 groups according to chinese medical syndrome.Clinical characteristics,therapeutic approaches and the incidence of heart failure,malignant arrhythmias,and death during hospitalization were compared.A multivariate logistic regression analysis was performed to examine association between candidate risk factors and in-hospital outcomes.Results Gender,history of smoke,serum creatinine and early revascularization therapy were insignificantly different across patient groups.The incidence of malignant arrhythmias in the group of qi stagnation and blood stasis was highest among four groups.In-hospital Mortality and the incidence of heart failure in yang-qi deficiency group were higher than any other group.After multivariate adjustment,chinese medical syndrome was not associated with a graded increase of in-hospital death in patients with AMI.Conclusion AMI patients with qi stagnation and blood stasis tend to develope malignant arrhythmias.Yang-qi deficiency patients are at higher risk of death during hospitalization.Chinese medical syndrome is of certain value in predicting in-hospital outcomes in AMI patients.