Biologically active peptide compounds have the advantages of high biological activity, easy absorption, safety and non-toxicity, and their physiological and biological effects of skin care and anti-aging have also been gradually applied to beauty cosmetics. At this stage, the biologically active peptides widely used in beauty, skin care and cosmetics are mainly functional peptides with small molecular weights, and most of these peptides are prepared by chemical synthesis. Use skin care products containing polypeptides, which have the effect of stimulating the differentiation and regeneration of epidermal cells, strongly promoting epidermal repair and healing, and inhibiting the formation of scars. The use of skin care products containing polypeptides can provide skin nutrients to the skin dermis, stimulate the activity of fibroblasts, promote skin wound healing and functional regeneration, and enhance the structure of the extracellular matrix. Use skin care products containing peptides, which can enhance the skin's resistance to environmental aggressions, irritants, ultraviolet radiation, inflammatory substances and pollutants, increase skin elasticity, promote scar tissue regression, delay skin aging, and strengthen skin tension.