The invention provides an Internet broadcast radio-on-demand system, which can fully integrate broadcasting program resources and provides a service for playing programs on demand and requesting the programs randomly. The Internet broadcast radio-on-demand system is characterized by comprising a router, wherein the router is connected with a network radio-on-demand system and a network multi-channel digital audio broadcast controller respectively and is connected with a portal website server through the Internet; the network multi-channel digital audio broadcast controller is connected with audio play equipment; the portal website server is connected with a mirror server and a central server sequentially; the central server is connected with a radio-on-demand editing work station and a live broadcast editing work station respectively; and the live broadcast editing work station is connected with the radio-on-demand editing work station.