The invention relates to a system for realizing video-on-demand (VOD) and push VOD by athe cloud computing technology and a method thereof. The system consists of a group of terminal nodes, a digital rights management (DRM) front end, a service management front end and a cloud computing management front end which together form a distributed cloud computing distribution network, and the use of the VOD and the push VOD by cloud computing are realized through the interaction and the communication between amongboth the cloud computing management front end, and the service management front end and the terminal nodes as well asand the transmission and the share among all network nodes, wherein the cloud computing terminal nodes comprise a group of common terminal nodes and a group of hyperterminal nodes, the service management front end comprises a push VOD server, a VOD server, a live server and a quantum packet packaging server, the cloud computing management front end comprises an authorization management server, a content node server and a node management server, and the cloud computing network nodes comprise the cloud computing terminal nodes, the quantum packet packaging server and the content node server.