The public sphere is an important condition for discourse democracy to be launched,in that it is the space of discourse democracy to run,generates the main elements of discourse democracy,and provides the institutional guarantee for discourse democracyWith the development of information and communication technologies and the expansion of the internet,the internet public sphere has been rising,which not only provides an important opportunity for reconstruction of the public sphere,but also brings new vitality to the development of discourse democracyThe components of the internet public sphere,including rational and equal communication subjects,open and wide communication domains,interactive and free communication processes,rich and diverse communication contents,would provide important conditions and platforms for discourse democracyIn the long run,with the development of the internet public sphere,discourse democracy could be more mature and active,meanwhile it can also be expected to become a new starting point for the development of democratic politics and in turn become an important supplemental for representative democracy in many countries