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With streaming media services are widely used on Internet, the users of video on demand (VOD) increased rapidly, so there are more demands on quality of service (QoS) of streaming media data transmission. To guarantee the quality of real-time transmission for streaming media data, M-RSVP has been designed on the application layer of OSI model by RSVP principle, which is a resource scheduling mechanism suitable to self-developed PPVOD system on P2P network. M-RSVP has defined the resources and messages, the working principle of M-RSVP resource scheduling has been designed in PPVOD system, and implemented it in PPVOD system. Through experiments and analysis, and compared with the former system, the performance of PPVOD system was improved, so current PPVOD system was optimized.