梧州市是我国高发恶性肿瘤现场防治研究点之一 ,为防止肿瘤死亡的误诊和漏诊 ,保证肿瘤登记的质量 ,更好地了解肿瘤死亡在全死因中的地位及其与其它死因的关联 ,从 1 986年起 ,把梧州市城区居民全死因调查作为常规工作 ,并从 1 990年起 ,严格按照全国肿瘤防办《死因情况调查手 Luzhou City is one of the sites for high-risk cancer prevention and treatment in China. To prevent misdiagnosis and missed diagnosis of cancer deaths, to ensure the quality of tumor registration, to better understand the status of tumor death in all causes of death and its association with other causes of death, from 1 Since 986, the investigation of all causes of death of urban residents in the city of Quzhou has been used as a routine task. From the year 990 onwards, the investigators of the cause of death of the National Cancer Prevention Office were strictly observed.