In the flight test,in order to solve the problems of low data transmission rate,insufficient transmission distance and poor transmission reliability during data communication between ground test equipment and remote equipment,a "gigabit ethernet + optical transceiver integrated module" long-distance transmission design is proposed based on ZYNQ.This design uses Xilinx's ZYNQ7000 series XC7Z015 as the main control chip,the PS side realizes data interaction with the host computer through the TCP protocol,and the PL side realizes the UDP protocol communication with the telemetry equipment by calling Xilinx's three-speed Ethernet IP core.In the process of Ethernet receiving data,a request retransmission mechanism is designed to ensure the reliable transmission of data.Secondly,an integrated optical transceiver module is added,and the optical cable is used instead of the cable,and the signal transmission distance is increased by the conversion of the electrical signal and the optical signal.It has been verified that the data transmission rate can reach 669 Mb/s under the condition that the system and the remote equipment are connected by a 20 km optical cable,and there is no error or frame loss during the data transmission process,and the operation is stable.