To improve the fabric quality and meet the high-speed, high-performance requirements of air-jet looms, an AC servo-based air-jet loom warp tension control system was designed grounding on the AC servo system’s high control accuracy and ARM microcontroller LPC2294. Theoretical analysis and integrated design of servo system in terms of the warp tension design were completed. The system can satisfy the high-speed and high-performance requirements of air-jet looms, and can maintain the tension stability of warps.