In recent years, with the rapid development of Internet, more and more network applications gradually emerged, especially in the bandwidth grow that cause multimedia applications become popular. With the change in demand, Internet transport protocols are increasingly diverse. Now, many protocol co-exist in Internet. So different protocol how co-exist is an important problem. Two emphasis in how network transport protocols to coexist is Fairness and Efficiency, But Fairness and Efficiency is basically a contradiction exists, In tradition transmission protocols, the Transmission Control Protocol (TCP) is fairest. It has a congestion control mechanism that can avoid network environment be destroyed. But it will decreased efficiency. In other hand, User Datagram Protocol (UDP) is most efficient but it has a problem about plunder bandwidth. Relative to TCP, UDP is very unfair but fast protocol. In the past, UDP user plunder bandwidth is not serious problems because UDP user is much smaller than other protocol user. With multimedia applications become popular, the problem is began to seriously. Bandwidth of TCP user is been a lot of plundered, so Internet Engineering Task Force (IEFT) provided Datagram Congestion Control Protocol (DCCP) to solve this problem. But we found DCCP is too friendly, this feature cause DCCP can't replace UDP to doing high-speed transmission. We hope to find the way to improving fairness and maintaining the high-speed transmission rate. In this paper, we provide User Datagram Control Protocol (UDCP), it is evolved based on UDP. Adding controller to UDP. Finally, we Analysis and proof the UDCP has fairness and maintaining the high-speed transmission rate.