Air jet loom YC9000, adopting properly structure and stable box-type frame structure, high-precision CNC and integral welding beam with many auxiliary supporting frame in the middle, results in being equipped strictly with more stable and dependable rack, which can ensure the lesser vibration of 0.25m/s² of the loom when weaving .Various beating systems are available for users which can realize four-bar, six-bar and conjugate cam beating. The solid beating shaft and multiple auxiliary supporting and counter weight balanced beating systems improve the stability of the loom at high speed operating. The loom is suitable for high-density weave and can improve the quality and efficiency. The new design of the air path of the supporting spray solenoid valve which integrates with flow cavity makes the air consumption decrease from the 1.2cub/min to 0.8cub/min which shortens the paths of air delivery to decrease the consumption of the air. Six-bar beating-up mechanism with abundant weft time on the steel reed improve the advantage during the width weaving to ensure the weft insertion.