An integrated video service peer to peer network system, includes: a media source system, configured to divide video service data into one or more segments and each of the one or more segments into a plurality of blocks, and to generate a media description file based on segment dividing information and media format information, wherein, each of the plurality of blocks is of a self-description type and comprises a block head and a block body, the block body including media data; a media distribution management system, configured to store media distribution information, wherein, the media distribution information represents the information of the storage status of divided video service data segments at a peer source node and the information of the serving capability status of the peer source node; and a plurality of the peer source nodes, configured to store the video service data, and to transmit the video service data to a service requesting node. With the present invention, the range of sharing can be effectively extended, the usage of the client resources can be optimized, while the provider system and the client system are significantly simplified, so the cost of the operation and maintenance are reduced.