林州市是我国食管癌高发区之一 ,长期保持较高的发病率和死亡率水平。自 5 0年代以来许多学者提出了众多病因假说 ,但至今食管癌的病因尚未完全明了 ,因而给该病的防治带来很多困难。根据林州市生活环境中 ,尤其是饮用水中可能具有强致癌物的假说 ,我们应用蚕豆根尖微核技术对 Linzhou City is one of the high-risk areas of esophageal cancer in China, and it maintains a high level of morbidity and mortality for a long time. Since the 1950s, many scholars have proposed numerous etiological hypotheses, but the etiology of esophageal cancer has not been fully understood so far, which has brought many difficulties in the prevention and treatment of the disease. According to the hypothesis that Linzhou City’s living environment, especially drinking water, may have strong carcinogens, we apply the micronucleus technology of Vicia faba root tips.