为探索海宁地区女性乳腺癌的危险因素，对１９９０～１９９６年间确诊的女性乳腺癌存活病例及其正常人对照进行了１∶１配对的病例对照研究。结果显示：当地居民经常食用的羊肉、鸭肉是乳腺癌的危险因素，锌、锰摄入量及饮用河水、池塘水、溪沟水的年数病例组明显高于对照组，并存在明显的剂量－反应关系，而轻体力劳动和水果是保护因子。 To explore the risk factors for female breast cancer in Haining, a case-control study with a 1:1 pairing of female breast cancer survivors diagnosed between 1990 and 1996 and their normal controls was conducted. The results showed that: The local residents often eat lamb, duck meat is a risk factor for breast cancer, zinc, manganese intake and consumption of river water, pond water, creek water, the number of cases was significantly higher than the control group, and there is a clear dose - Responsiveness, while light physical labor and fruit are protective factors.