1990年1月～1996年6月，我科共收治资料完整的40岁以下胰腺癌23例，误诊18例，误诊率78．3％。本文就误诊原因作一分析，以期提高青年胰腺癌的早期诊断水平。临床资料一、一般资料：男11例，女7例，男女之比1．57：1。年龄28岁一39岁，平均M．6岁。误诊时间最短20天，最长1年， From January 1990 to June 1996, 23 cases of pancreatic cancer under the age of 40 were completely treated in our department. Misdiagnosis occurred in 18 cases and the misdiagnosis rate was 78.3%. This article makes an analysis of the reasons for misdiagnosis, with a view to improving the early diagnosis of pancreatic cancer in young adults. Clinical data I. General information: 11 males and 7 females, male to female ratio 1.57:1. Age 28 to 39, average M. 6 years old. The misdiagnosis time is as short as 20 days and up to 1 year.