中国(除台湾省外)仅在海南岛发现有咀嚼槟榔现象。因为中国口腔癌的发病率低,而习俗地咀嚼槟榔会增加口腔癌的发病率,因此在海南岛进行一次口腔的癌前病变和疾病的调查,看来是有益的。资料和方法本调查在陵水地区以黎族占多数的居民点进行。时间为1983年10月,恰逢台风季节, China (except Taiwan Province) found chewing betel nuts only on Hainan Island. Because of the low prevalence of oral cancer in China, and the customary chewing of betel nut increases the incidence of oral cancer, an oral precancerous lesion and disease investigation in Hainan Island seems to be beneficial. Materials and Methods This survey was conducted in the Lingshui area at a residential area with a majority of the Li nationality. The time was October 1983, which coincided with the typhoon season.