Abstract: We propose the concept of spatio-temporal fuzzy ontology(STFO),focusing on the description of transportation information.The STFO architecture contains basic structure,concept top-level ontology,property top-level ontology,and relationship top-level ontology.The STFO which provides the description of spatial relationship,state-process-change,fuzzy value of property,and fuzzy relationship,is more suitable to describe the transportation information.In conclusion,the transportation knowledge modeling based on STFO establishes an unified and canonical knowledge architecture,which improves the abilities of the sharing and reuse of transportation information.