This paper design and implement a new kind of communication protocol CFFTP(Customized Fast File Transport Protocol) which is highspeed and reliable. We propose the interactive process of CFFTP, and how to realize it on server and client. This protocol can make full use of the LAN bandwidth to increase data transmission speed over network. Simulation results shows that the data speed is about 10 Gbps. We also test this new protocol on our TestBed, due to the restriction of the reading rate on RAID(600-800MB/s), the transmission rate is 6 Gbps.