Abstract: From July 1956 to June 1986,there were 2441 autopsied cases,among which 653 were over 60（male 376,female 277）.278（42.6%）died of malignancy.Among the 278,82 were carcinoma of lung（29.5%）.46 of stomach（16.5%）,31 of liver（11.3%）,17 of pancreas（6.1%）,13 of esophagus（4.7%）,12 of gallbladder and bile duct（4.3%）,10 of colon（3.6%）,8% prostate（2.8%）. 6 of renal carcinoma（2.2%）and 6 of myeloma（2.2%）.The rest cases（57.4% of all cases）died of non-malifnancy.Among which 73 were due to cerebral Haemorrhage（19.5% of the non-malignancy）,58 myocardial infarction（15.5%）,43 chronic bronchitis and cor pulmonary（11.4%）,33 cerebral infarction（8.8%）,21 pneumonia（5.6%）,19 tuberculosis（5.0%）,14 liver（3.7%）,11 rheumatic heart disease（2.9%）,8 hypertension（2.1%）,6 aortic aneurism（2.0%）.From the autopsy records there were 61 cases misdiagnosed（9.3% of all cases）.Among them,41 were misdiagnosed as carcinoma（6.2%）and the most common misdiagnosed were carcinoma of pancreas, stomach,lung,liver or reticulosis maligna.There were 20 being misdiagnosed as non malignant diseases（3.1%）and the most common misdiagnosed were myocardial infarction,tuberculosis,rhematic heart disease or amebiosis.The reasons of misdiagnosis were discussed.