The aim of this paper is to study prime fuzzy ideals of an ordered semigroup S,to characterize prime fuzzy ideals of S by ordered fuzzy points and fuzzy left (right) ideals of S.

• 研究序半群S的素模糊理想；通过S的模糊左(右)理想和序模糊点给出了S的素模糊理想的等价刻画.