Shrinkage is a parameter of testing textile fabrics to measure changes in length and width after washing, shrinkage failing materials are dimensionally unstable and they can cause de shaping and deforming of the garments or products made out of those materials, it is tested at various stages but important is to before cutting the fabric into further sewn products and after cutting and sewing prior to supplying the products to buyers and end users. The moisture absorption of fiber is the direct factor of fabric shrinkage. The tightness of yarn and fabric structure is the indirect factor of shrinkage. The tighter the structure, the expansion of the fiber cause the yarn to swell, then the warp height of the yarn in the fabric increases and the length of the yarn in the buckling state becomes shorter, so the fabric shrinks. Therefore, the higher twist and volume fraction of the yarn, the greater shrinkage of the fabric. The processing tension of the fabric also has an effe