This paper extends the L-fuzzifying closure and interior to fuzzy sets, and generalizes Kuratowski Fourteen Sets Theorem in L-fuzzifying topological spaces based on these.

• 论文中把L-不分明化闭包和内部的概念扩充到模糊集合，并在此基础上把库拉托斯基十四集定理推广到L-不分明化拓朴中。