Abstract: Aim: To study the clinical features of acute myocardial infarction complicated with-pump failure. Methods: The clinical materials of 52 patients with acute myocardial infarcti0n complicatedwith pump failure were retrospectively studied. ResultS: Out of 52 cases, there were 73. l% over 6Oyears Gf age. The mortality was 42. 3 %. The patients with extensive anterior or anterior and inferiormcar myocardial infarcion are susceptib1e to pump failure. Conclusion: C1ose observation for prompt recog-nition and management of complication is the key to reducing the mortality.