The requirements for knitted denim body shaping fabrics are divided into intrinsic quality and appearance quality. The intrinsic quality includes formaldehyde content, pH value, odor, decomposable carcinogenic aromatic amine dyes, fiber content, bursting strength, square meter dry weight deviation rate, washed dimensional change rate, Indicators include twist rate after washing, appearance after washing, elongation at constant force (35N), tensile elastic recovery rate, etc. Appearance quality includes defect scoring requirements, downgrading requirements for scattered defects and local defects, and other indicators.