The paper analyzes and utilizes the ASP.NET technology and puts forward a kind of model and method based on the ASP.NET technology,which realizes the transformation among heterogeneous data sources.The scheme has the following characterstics: B/S mode,being independent of and user's plat form,data distributed processing.Finally,it takes an example that converts non-DBMS data source into SQL data source which proves the method is feasible and(effective).