我们对500名年满20岁以上成年人就诊患者,作口腔粘膜白斑发病情况的调查。受检500成年人中男性301人,女性199人,男:女=1.5:1。在所受检的500成年人中,发现口腔粘膜白色损害的130人,罹患率占26％,其中男性罹患率39.2％(118/301),女性罹患率6.0％(12/199)。在口腔粘膜白色损害中,白斑5人(均为绉纸状) We investigated the incidence of oral leukoplakia in 500 adults over the age of 20 who visited patients. Of the 500 adults examined, 301 were males, 199 were females, and males: females = 1.5: 1. Of the 500 adults examined, 130 people were found to have white lesions of oral mucosa, accounting for 26% of all attacks, including 39.2% (118/301) of males and 6.0% (12/199) of females. In oral mucosal white lesions, white five people (all crepe paper)