The invention provides a real-time flow media communication transmission method ,which comprises: 1. prestoring strategy to support different QOS both in server and client terminal respectively; 2. client terminal and server negotiate and determine current QOS strategy and form local strategy gradient table when client telnets; 3. server sets the conversion and transmission or client terminal according to negotiated result; 4. the client terminal and server exchange network running condition periodically to adjust QOS strategy real time. This invention comprehensive evaluates the prestored parameters, current network condition, current server load condition and objective running state to adaptive control encode and transmission means, and makes the whole system on optimal state.