Objective：To investigate the prevalence of cancer，assess the risk factors of cancer and offer the bases for making inter－ventional measures. Methods：30 cancer patients were taken as case group，and with the method of random sampling from the crowd of 4 290 normal data，430 people were extracted as control group. First，Chi-square and t-test were used to discuss the relationship be－tween the various factors，and then Logistic regression analysis was made by statistics software SPSS17.0 based on the results of the 460 people. Results:The prevalence of cancer was 0.69%. Sin－gle factor analysis results showed cancer was relate to age，av－erage annual income，BMI，educational level，family history of cancer，frequency of fruit and vegetable diet，oily and fatty food，smoking，drinking and activity time. Multivariate analysis showed that age，BMI，family history of cancer，frequency of fruit and vegetable diet，oily and fatty food，smoking and activity time were independent risk factors of cancer. Conclusion：Cancer is a kind of disease which correlates to life style；the essential measure to prevent cancer is to change unhealthy life style．