Streaming media accounts for the majority of Internet traffic. P2P is an important method for streaming media distribution on the Internet. This paper proposes an innovative implementation method of P2P Tracker named eTracker. Peer lists are reserved in the numerous distributed eTrackers which locate in the edge network. Our design not only eliminates performance bottleneck of traditional centralized Tracker, but also optimizes peer selection in P2P system through the recognition of local peers.