The invention discloses a pure cotton spunlaced non-woven fabrics quality control process in the technical field of non-woven fabrics production. The pure cotton spunlaced non-woven fabrics quality control process comprises the following steps: S1, fed cotton carding; S2, netting; S3, product spunlacing; S4, drying; S5, defect stain detection; S6, gram weight moisture content detection; S7, reeling; and S8, re-reeling arrangement. According to the invention, online gram weight moisture content detection is added before product reeling, a fixed quantity of the gram weight and water content signals are fed back to a front equipment control center host, closed-loop gram weight moisture content PID control is carried out, and an eubactria exponent in a product is enabled to be under effective control. The production process of pure cotton spunlaced non-woven fabrics is strictly controlled, the production process of the product are under effective control, an expected quality standard is reached, the production loss of downstream products is greatly reduced, worries of consumers are greatly reduced, the product gram weight is stable, the moisture content is stable and does not exceed a standard, the eubactria exponent reaches a standard, and defects and stains are rejected.