Knitted fabrics are mainly divided into two categories: weft knitted fabrics and warp knitted fabrics. Weft-knitted knitwear is used for sweaters and socks, etc. Warp-knitted fabrics are commonly used as underwear fabrics, and manual preparation is also a method of weft knitting.

In the weft knitting, the spinning yarn is made from the side of the machine to the other side to make a horizontal leisure (or a circular leisure), and a new knitted fabric coil can be formed by the knitting needle. The weft knitted fabric yarn is in the transverse direction, and the fabric is formed by weaving a row of yarns in a row and a row in the course direction. All the coils of a row are woven from a single spun yarn. The weft knitted fabric can be made on a flat knitting machine or a circular machine.

The warp knitting is a group of warp yarns in the warp direction for vertical leisure, and the knitting needles are used to form a new knitted fabric coil. Warp knitted fabrics and warp knitting machines for producing them, and weft knitted fabrics are essentially different from weft knitting machines for producing weft knitted fabrics. The spun yarn is warp-knitted in the warp-knitted fabric. Just like the warp yarn of the machine fabric, the warp yarn is fed by the warp beam, and a large number of parallel-spun yarns are wound on the warp beam, similar to the warp beam in the weaving. . The direction of the spun yarn in warp-knitted fabric is warp. A vertical coil is formed in one course and then moved diagonally to the other wales to form another coil in the next course. The spun yarn advances in a zigzag pattern from one side to the other along the length of the fabric, and each of the stitches in a row is made of different spun yarns.
Knitting objects have the largest proportion of weft knitted fabrics.

Weft-knitted knitted fabrics mainly include basic weft knitted fabrics (woven fabrics, also known as weft, rib fabrics, double-knit fabrics), special weft knitted fabrics (double rib knitted fabrics, double-knitted fabrics) Things, plush, knit loops, knit velvet, etc.)