The forms of diminutives in Central Plains Mandarin of Northern Henan can be categorized into six distinct types:rhotici-zation;prefixing with"圪"(ge);prefixing with"□[·au]/小(xiao)";suffixing with"子"(zi);suffixing with"□[·nau]/妮Z[(n)iau24]/□[·(n)iou]/□[·(n)io]";combination,a form of diminutive intensification,which can further be divided into four subcategories,namely"圪(ge)+rhoticization","□[·au]/小(xiao)+rhoticization","□[·au]/小(xiao)+rhoticization"and"□[·au]/小(xiao)+□[·nau]/妮z[(n)iau24]/□[·(n)iou]/□[·(n)io]".In terms of their semantic function,the rhoticization form shows the strongest extension capabilities,having extended from the lexical level to the syntactic level,and its original di-minutive sense when used for nouns has begun to wear away.At present,the intensification form"□[·au]/小(xiao)+rhoti-cization"has become the most active and productive form of diminutive nouns in Central Plains Mandarin of Northern Henan.