Wash-and-wear finishing method of cotton fabric with low strength loss, high performance and good environmental friendliness

The invention relates to a wash-and-wear finishing method of cotton fabric with low strength loss, high performance and good environmental friendliness, which comprises the steps of carrying out hot water treatment on the cotton fabric, drying at a constant temperature, forming a new crystallization area in an amorphous area of the cotton fabric, and then carrying out formaldehyde-free wash-and-wear finishing to obtain the cotton fabric with low strength loss, high performance and good environmental friendliness. The specific flow includes hot water treatment, constant temperature drying, padding with a wash-and-wear finishing liquid, pre-drying, and baking. According to the invention, macromolecular chains of the amorphous area of water molecular cotton fibers are directionally arranged to generate a new crystallization area, the elastic modulus and strength of the crystallization area are greater than those of the amorphous area, the crystallization area plays an important role in increasing the wash-and-we