The invention discloses a ski sock. The ski sock comprises a sock body, an ankle part and a stocking leg; the sock body and the stocking leg are integrally formed through the ankle part; the sock body is characterized by comprising a toe part, a dorsum pedis part, a planta pedis part and a heel part, wherein the toe part, the dorsum pedis part, the planta pedis part and the heel part are integrally formed; the inner sides of the toe part, the planta pedis part and the heel part are provided with thickening terry, the stocking leg includes a rib top, a first blocking part and a rear side part, wherein the rib top, the first blocking part and the rear side part are integrally formed, the inner side of the first blocking part is provided with thickening terry, the ankle part includes a front ankle part, an anklebone part and a rear ankle part, and the inner sides of the anklebone part and the rear ankle part are provided with thickening terry. On one hand, the thickening terry plays a role in thermal insulation, on the other hand, the thickening terry has a good buffer effect, the feet and legs are finally protected, and the safety of skiing is easily improved.