in this paper

the eminent role of CATV networks in the development of China’s Information Superhighway is pointed out

while limitted role will be revealed for the development of interactive television in telephone networks;the key techniques of terminal interactive services and bi-directional transmission of interactive services

as well as certain way of receiving（i.e.integrated receiver/decoder

IRD）

are briefly introduced ;and possoble development of network structures and information working platforms

such as MPEG-2

are also discussed.