The present invention relates to a method for manufacturing preservatives for cosmetics, and unlike synthetic preservatives composed of conventional chemical components. By mixing natural herbal extracts and containing them in cosmetics, skin irritation, side effects and other environmental pollution It relates to a cosmetic preservative for preventing diseases and a method of manufacturing the same, The specific solution of the present invention is that "the herbal medicine consisting of Hwangbaek, rock brush, creation, Banha, Yangjegeun, Each of the above herbal medicines is powdered and mixed with water, ethanol, methanol, propanol, butanol, pentanol, hexanol, and hep Tanol, octanol, decanol, glycol, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, glycerin, dip What is made by adding a solvent in which any one of lophylene glycol, caprylyl glycol, and diethylene glycol is added, and In a powdered mixture of 200g of Hwangbaek, 200g of rock brush, 200g of Jinja, 200g of Banha, 200g of Yangjegeun, water, ethanol, and Tanol, propanol, butanol, pentanol, hexanol, heptanol, octanol, decanol, glycol, propylene glycol, butylene glycol, Any one of pentylene glycol, hexylene glycol, glycerin, dipropylene glycol, caprylyl glycol, and diethylene glycol is 2 : Mixing the solvent mixed in a ratio of 8 and keeping it within the concentration range of 0.001 to 20.000% (w/v), 200g of Hwangbaek, 200g of rock brush, 200g of fresh water, 200g of Banha, 200g of Yangjegeun are mixed with water and Tanol, methanol, propanol, butanol, pentanol, hexanol, heptanol, octanol, decanol, glycol, propylene glycol, butylene Any of glycol, pentylene glycol, hexylene glycol, glycerin, dipropylene glycol, caprylyl glycol, and diethylene glycol After adding 2000ml of a solvent mixed with one in a ratio of 2:8, extraction at 40℃ for 72 hours and natural filtration are performed twice. After repeating, it is constituent that it is condensed under reduced pressure in a rotary vacu