Washing liquid based on modified chitosan micro-nano fiber particles

The invention provides washing liquor based on modified chitosan micro-nano fiber particles. The washing liquor comprises 0.1 wt%-3wt% of polydopamine, carboxylated modified chitosan nano fiber particles, a complexing agent, a thickening agent, a humectant, functional active ingredients and the like. Wherein the grafting amounts of carboxyl groups on the polydopamine and the carboxylation modified chitosan nanofiber particles are sequentially reduced from the outside to the inside of the fibers, so that when a washing solution is used for washing, the fibers are swelled but not dissolved, and the softness and the elasticity are improved. Carboxyl groups on the surfaces of the polydopamine and the carboxylation modified chitosan nanofiber particles have high hydrophilicity and can endow the micro-nanofiber particles with the ability of swelling to form gel particles, and the polydopamine on the surfaces can improve the gel strength of the gel particles formed after liquid absorption and avoid dissolution; the