Objective To evaluate the standardized drug treatment and its influence factors of patients,with coronary artery disease,in hospital and one year after discharge.Methods The study enrolled sequentially 165 patients who were firstly diagnosed of coronary artery disease,61 cases with stable angina,67 cases with unstable angi-na and 37 cases of acute myocardial infarction,by coronary artery angiography from 2010 to 2012.The standardized drug treatment and its influence factors of patients were analyzed at hospital and 1 year after discharge in the present study.Results Fifty five percent patients with coronary artery disease at hospital regularly took the four drugs,anti-platelet agents,statins,beta blockers and angiotensin converting enzyme inhibitors/angiotensin II receptor antagonist. The ratio decreased to forty five percent one year after discharge(χ2 =81.04,P <0.01).The reasons of the irregular medication taken were optional withdrawal(61%),following the doctors′advice(15%),economic hardship(20%) and the drugs′adverse reaction(4%).Conclusion The results of the present study showed that the rate of regular medication in patients with coronary artery disease is low in hospital and 1 year after discharge.The major reasons of the irregular medicine taken were the patients′optional withdrawal and the consciousness of second prevention was lack in doctors in our hospital.Therefore,the increase of the consciousness of regular standardized treatment in prima-ry care physicians and strengthen the management of the patients after discharge form hospital.