The utility model discloses a pair of warm pants, and can effectively solve the problems that a pair of conventional warm pants capable of serving as outerwear pants is poor in warm effect, and meanwhile, the thigh ends of the pants are easy to pull open. The pair of warm pants comprises a warm pants body; the warm pant body comprises an inner layer and an outer layer connected closely; fluff is arranged on one side, facing inwards, of the inner layer; and reinforcing ribs I are arranged from the thigh end of the front side of the warm pants body to the waistband as well as from the thigh end of the rear side of the warm pant body to the waistband. The warm pants have the advantages that the warm effect can be served, meanwhile, the warm pants can be directly worn to go out; the fluff is additionally arranged on the inner layer to improve the warmth greatly, the warm pants can be more beautiful when serving as the outerwear pants, meanwhile, the reinforcing ribs are arranged from the thigh ends to the waistband to improve the overall strength of the pants.