Application of periplaneta americana active ingredient extract in cosmetic preparation

The invention discloses an application of a periplaneta americana active ingredient extract in cosmetic preparation. The periplaneta americana active ingredient extract is prepared by the following steps: pretreating periplaneta americana by performing cleaning, drying, crushing and the like, and then performing extraction, vacuum concentration, water layer separation, acetic etherdegreasing, objectionable odor removal, sensitizer and pyretogen removal through active-carbon adsorption, and the like to obtain an active ingredient filtrate which mainly contains active ingredients of polypeptide, amino acid and the like and every 1 ml of which contain 0.5-1.5g of a crude drug. The active ingredients of the periplaneta americana active ingredient extract have natural healthcare functions of resistinginflammation, reducing swelling, promoting skin healing, improving microcirculation, whitening and the like, and can be prepared into water aqua, hydrogel, emulsion systems and surfactant systems to serve as beauty tr