Abstract: The academic institutes of Beijing city is going to be converted form scientific and technical institutions into scientific and technical enterprises, professional technological development centers, and adopt the joint-stock system, or attach themselves to state owned large and medium-sized enterprises. Onthe basis of 20 years experience of Beijing academic institutes reform, this paper puts forward the Sytematical ways of the conversion to enterprises, and looks the how to set up a multiple stock ownership, and make perfeet the related subsidiary measures.