The lower triangle of the machine is designed with closed track and wide needle heel, equipped with looped, collector, floating triangle, light and simple knitting needles and triangle changes, it can weave various styles of high-quality tissue cloth, such as elastic health cloth (polyester ammonia health cloth), twill, air layer, sandwich liner, bubble velvet, double-sided mesh, mercerized cotton and various patterns of tissue. Adding spandex OP device can weave elastic double-sided cloth and other men's and women's fashion fabrics. The humanized design makes the replacement of needle cylinder and needle plate more simple and fast, and adapts to the changing market requirements.