TCP-friendly congestion control is a key technique to guarantee the large-scale deployment of real-time streaming and multicast service in the Internet. On the basis of TCP emulation at receivers (TEAR) scheme, a new congestion control mechanism, called adaptive TCP-friendly congestion control (ATFCC), is proposed. In this scheme, the parameters of weighted average are dynamically adapted according to the type of packet loss and the duration of current congestion epoch. Simulation results show that ATFCC scheme outperforms TCP-Friendly rate control (TFCC) protocol in terms of rate smoothness and fairness to TCP flows.