In order to meet the requirements of high speed and multi-channel of data acquisition and transmission for γ-ray industrial Computed Tomography (CT), the system based on User Datagram Protocol (UDP) with Field-Programmable Gate Array (FPGA) controlling was designed. This system increased FPGA counting unit, so more channels could be used for data collection. Main control was based on FPGA as the core, which used UDP protocol and was implemented by Verilog programming. Then, data was transmitted to upper computer for image reconstruction by Ethernet interface chip. The upper computer interface and mutual communication with the underlying transmission circuit realized by VC ++ 6.0 programming. The experimental results indicate that, in the 100 Mb/s full-duplex mode, the network utilization rate can reach 93%, and transmission speed is 93 Mb/s (11.625 MB/s), and the upper computer can receive data correctly in a long distance. So, it can satisfy the system requirements of rapid speed and long distance for γ-ray industrial CT.