The overall goal of this study is to develop, pilot test, implement, and evaluate a nurse-coordinated depression care model integrated into the care of Acute Coronary Syndromes (ACS) patients with rigorous assessment of feasibility, effectiveness, acceptability and cost in rural China. This study is a large multi-center, randomized clinical trial among 4,000 ACS patients from 20 rural county hospitals selected from a well-established research network across China.