Abstract: ［Abstract］ Objective：To investigate the distribution feature of malignant tumor in Yanbian Korean Minority National area.Methods ：According to International Classification Diseases (ICD-9/ICD-10 ) , We analyzed a 9 -year (2001 to 2009) review of 8581 persons（8545 persons of Han and Korean minority nationality，36 persons of other nationalities ）in the Affiliated Hospital of Yanbian University between the Korean minority nationality and Han. The standardized incidence rate in the period were caculated。Results: Variations in malignant tumor incidence patterns have been observed through different ethnicities as well as between males and females. Bing a male increased the risk of most types of cancer，and the prevalence rate of Korean minority nationality was significantly higher than that of in Han，Lung cancer and live cancer were identified with the highest incidence rates in Han and Korean minority nationality respectively among all malignant tumor. Conclusions: The main factors of compositionof malignant tumor and sexual difference in Yanbian are: Different dietary patterns 、physiological character and living habit.

Key words: malignant-tumor, nationality, living-habit, incidence