Localizations of 18 antigens in normal sweat glands were analyzed. The antigens were roughly classified into 8 antigens: 1) distributed throughout the epithelial cells; 2) localized in whole sweat glands; 3) localized only in the secretory portion of sweat glands; 4) localized only in the inner cells of ductal portion of sweat glands; 5) localized in the myoepithelial cells; 6) localized only in the outer cells of dermal ducts of eccrine glands; 7) localized only seen in some of apocrine glands; 8) seen in the inflamed sweat glands. Based on these findings, I discussed about the forms and meanings of localization of those antigens.