The purpose of this research was to1) Develop electronic media in knowledge management for exporters of tilapia. 2) Test of electronic media efficiency for exporters of tilapia.The samples were 15 entrepreneurs of Nile Tilapia fish raising in Bang Khaem Subdistrict, Muang District, Nakhon Pathom Province.By using qualitative research methods, interview forms, data analysis using document analysis. The results showed that the efficiency of electronic media for exporters of tilapia was good. The easy access to the information and the accompanying pictures make the entrepreneurs increase their potential to develop themselves into exporters.