Abstract: The results of a sampling survey on the incidence and mortality of malignant tumours developed 1992-1994 in Baoji area Shanxi province showed that there were 1291cancer patients among the total 820,000 population. The incidence of all sites of cancers was 41.61 per 100,000 persons per year and the mortality was 31.58 per 100,000persons per year.The top 8 cancers in incidence were stomach, liver, lung, esophagus,cervix, colon, breast and gallbladder cancers. The patients older than 40 years were 87.68% of all the patients, patients diagnosed in the hospitals of county and the hospitals better than hospital of county were 96.9%, patients diagnosed pathologically were 31%, treated by comprehensive therapy were only 22.85%, treated surgically were only 13.17%.This study gave some suggestions about how to improve the level of the therapeutical and preventive work of cancers.