Abstract: The concept and relation of the ontology information with protégé is definite.However, things in the real world and their relations are often fuzzy and this ambiguity may change as things develop.Based on the FRDF (Fuzzy Resource Description Framework) in this paper, the ontology creation tools protégé is introduced and supplemented and modified to fit for the Fuzzy ontology establishment, and impressed the storage methods of fuzzy ontology, the function of fuzzy protégé (FProtégé), structure and realization methods.