Abstract: The Electrocardiogram (ECG) is the most common and foremost detection means for the diagnosis of ardiovascular diseases. Although the resident doctors have systematically studied the ECG diagnosis and arrhythmia of nternal medicine during undergraduate education, it is still a challenge and a key skill for medical students to analyze and interpret ECG accurately after graduation.We explored the ECG analysis teaching method, referred to as “R2CA-PQRST”,both for under graduate education and standardization training of residents in Capital Medical University. This method is easy to remember, when combined with case-based learning (CBL) method to improve the teaching effect, has improved the ability of the standardized training of residents to read and diagnose ECG.