目的　探讨不同年龄急性心肌梗死患者的临床特点。方法　将 2 2 2例急性心肌梗死患者 ,根据年龄不同分为 4组 :<6 0岁为非老年组 ,6 0～ 6 9岁为低龄老年组 ,70～ 79岁为中龄老年组 ,≥ 80岁为高龄老年组。分别对其临床表现进行比较分析。结果　非老年组中典型胸痛常见 (82 .1% )。老年各组随着年龄增加而有其独特表现 :临床症状不典型及多变性 ;梗死面积广泛 ;并发症多而危重 ;伴存疾病多 ;病死率高。结论　不同年龄急性心肌梗死临床表现各具特点 ,年龄越大 ,临床表现越不典型 ,病情越危重 ,预后不良。 Objective To investigate the clinical features of acute myocardial infarction patients of different ages. Methods A total of 222 patients with acute myocardial infarction were divided into 4 groups according to their age: <60 years old non-elderly group, 60 to 69 years old group, 70-79 years old middle aged group, ≥ 80-year-old senior age group. Their clinical manifestations were analyzed comparatively. Results Typical chest pain in the non-elderly group was common (82.1%). Elderly groups with their age has its unique performance: atypical clinical symptoms and variability; infarction area; complicated and critically ill; associated disease and more; high mortality. Conclusion The clinical manifestations of acute myocardial infarction at different ages have their own characteristics. The older the older the clinical manifestations are, the more serious the disease is and the poor prognosis is.