Knitted fabric is the use of knitting yarns bent into a circle and string formed fabric. The difference between knitted fabric and woven fabric is that the form of yarn is different in fabric. Knitting is divided into weft knitting (weft, knitted, fabric) and warp knitting (warp, knitted, fabric). At present, knitted fabric is widely used in clothing, fabrics and materials, home textiles and other products, and has been loved by the vast numbers of consumers. In the process of printing and dyeing, knitted fabrics always appear in all kinds of problems. In this paper, 5 problems are most common.