Weft density of small air-jet loom is a kind of special high-grade suitable for small-weft weaving density characteristics of the development of specially designed high-speed air-jet looms. It has high efficiency, high-quality weaving(fabric side forming of good quality), yarn c count range to adapt to light(filament, staple fiber), low energy consumption and low labor costs, is a small weft weaving density fabric, such as medical gauze, curtains cloth, cotton gurn, shoes, cloth and other fabrics where the best equipment.