A retrospective clinical study was done on 78 cases of acute myocardial infarction admitted to Jeonje Presbyterian Medical Center from Jenuary 1972 to June 1982. The following results had been obtained. 1) The ratio of male to female patients with acute myocardial infarction was 3.9:1. Most patients were in the age group between the 6th and 7th decade(64%). 2) The number of patients admitted annually was about 8, and was increased 2.5 folds in the latter 5 years as compared with the first 5 years. 3) The most common past illnesses of patients with acute myocardial infarction were coronary insufficiency with angina pectoris, hypertension, previous myocardial infarction, diabetes mellitus, valvular heart disease and hyperthyroidism in order named. The patients without significant past illness amount to 41.0%. 4) Among the patients with acute myocardial infarction smokers were 1.9 times as many as non-smokers. 5) The chief complaints of the patients with acute myocardial infarction on admission were chest pain(60.3%), dyspnea(26.9%) and mental change(6.4%). 6) The distribution of the patients withacute myocardial infarction by Killip classification was as follows: Class I, 47.4%, class II, 16.7%, class III, 16.7% and class IV, 19.2%. 7) The most common location of acute myocardial infarction by EKG was anterior wall of the myocardium at 79.5%. 8) The patients with arrhythmia by EKG amount to 53.8% and conduction disturbance 20.5%. 9) The patients with acute myocardial infarction who expired during admission were 23%. The ratio of male to female was 2.6:1. Among the expired patients Killip class IV was 80.8% and anterior wall infarction was 77.8%.