A　framework　of　IPTV　DRM　(digital　right　management)　system　was　proposed　which　aims　at　the　copyright　protection　of　the　multimedia　in　IPTV　system.　The　framework　consisted　of　the　DRMSS　(digital　right　management　service　system)　and　the　DRMC　(digital　right　management　client)　.Based　on　the　characteristic　of　the　multimedia　stream　transmission　in　IPTV,　the　encryption　was　completed　by　encrypting　every　TS/RTP　(transport　stream/real-time　transport　protocol)　data　packet　and　employ　the　efficient　AES　algorithm.　Experimental　results　show　that　the　framework　meets　the　requirement　of　real-time　stream　transmission,　and　takes　charge　of　user　authorization,　user　identity　authentication,　user　information　management,　media　encryption　and　key　management.　The　proposed　framework　is　in　accord　with　the　development　trend　of　the　content　protection　in　IPTV　and　has　theoretical　and　guiding　significance　for　the　development　of　IPTV　DRM　techniques.