A sterilizing sock suitable for wearing on the foot and suitable for killing germs which cause skin diseases on the inner surface of the shoe which is worn outside the sock. The sterilizing sock may include a first sock body, a second sock body that is sleeved with each other, a third sock body that is sleeved with each other, and a sterilizing agent layer. The sock body has an inner surface and an outer surface on opposite sides. The sterilizing agent layer is applied to the outer surface or the inner surface or both sides of the body, and the sterilizing agent layer is suitable for killing the pathogen.一種殺菌用襪子,適用穿套於足部且適用殺滅穿套於該襪子外部的鞋子內表面上所能引起皮膚病的病菌。該殺菌用襪子可包含一隻第一襪體、一隻互相套設的第二襪體、一隻互相套設的第三襪體及殺菌藥劑層。該襪體皆具有位於相反側的一內表面與一外表面。所述殺菌藥劑層敷設於該襪體的外表面或內表面或兩面皆有,且所述殺菌藥劑層適用於殺滅所述病菌。