Disclosed is a jacket having a warm pocket capable of warming hands of a user without interrupting user's activity in the field. The jacket has a dual-layer structure of an inner skin and an outer skin so as to accommodate a warmer therein. A pocket is formed at a front part or a rear part of the jacket by sewing the inner skin with the outer skin in the form of a pocket. The pocket is formed at both sides thereof with openings so as to allow a user to put both hands into the pocket. An inner pocket formed at one side thereof with a hand warmer receiving section is coupled to an outer surface of the inner skin.