Background: Calcified coronary lesion was regarded as high risk factor after coronary intervention because of lower procedural success rate, higher rate of restenosis and stent thrombosis, etc. The aim of this study is to compare the efficacy between drug-eluting stents (DES) and bare metal stent (BMS) after long calcified coronary artery intervention. Methods: Two hundred four patients who had long (>20mm) calcified coronary artery disease and successfully underwent coronary intervention with stent were consecutively enrolled from 3 interventional cardiology center since March 2003 to July 2006. One year clinical outcomes were analyzed. Results: Major adverse cardiac events were 8.8% in SES group, 5.2% in PES group and 18.2% in BMS group. 12months clinical outcomes were analyzed. Other data are in the following figure. Conclusions: If stent could be implanted successfully in long calcified lesions, the long-term outcomes were more favorable than expected. Revascularization rate were higher in BMS. However, BMS implantation might be also effective as DES in the treatment of long calcified coronary artery disease in the view of clinical outcomes