The present invention relates to a skin preparation composition for external use having excellent antiseptic ability without using chemical antiseptics. More particularly, the present invention relates to a skin preparation composition for external use, comprising: glyceryl undecylenate having excellent antiseptic ability; and one or more mixtures of ethylhexylglycerin, glyceryl caprylate, p-anisic acid and a citrus mixed extract, thus improving antiseptic ability through the increased effects of antiseptic abilities of those materials.