本文分析、比较了河南省食管癌高发区林县和低发区范县居民血浆维生素 C 的水平,还分析了其它因素对血浆维生素 C 水平的影响。结果表明:女性居民血浆维生素 C 的水平显著高于男性;在食管癌高发区与低发区之间、有无癌家族史之间、吸烟与不吸烟之间的血浆维生素 C 的水平无显著性差异。膳食的改善对提高血浆维生素 C 的水平有一定的影响。 This article analyzed and compared the levels of plasma vitamin C in residents of Linxian County and Fanxian County, where high incidence areas of esophageal cancer occur in Henan Province, and analyzed the effects of other factors on plasma vitamin C levels. The results showed that plasma vitamin C levels were significantly higher in female residents than in males. There was no significant difference in plasma vitamin C levels between high and low incidence areas of esophageal cancer, family history of cancer, and smoking and non-smoking. difference. Dietary improvement has a certain effect on raising plasma vitamin C levels.