The article combined with the current technical bottlenecks encountered in light test field and proposed the C-band Wireless network technology used in flight test telemetry area which based on the progress in C-band wireless network analysis at home and abroad.The establishment of C-band space telemetry network link,expand the telemetry data transmission available frequency band while increase the uplink channel between airborne network system and the ground monitoring network system,establish the technology foundation for the future air to ground integrated telemetry network . By using the general network management process and allocating the test resource dynamically, the flight test efficiency is improved.