Reinforced warm-keeping fabric suitable for down jacket, down jacket and preparation method of reinforced warm-keeping fabric

The invention provides a reinforced warm-keeping fabric suitable for a down jacket, the down jacket and a preparation method of the down jacket. The reinforced warm-keeping fabric comprises a first fabric layer, a cotton layer and a second fabric layer, the cotton layer is arranged between the first fabric layer and the second fabric layer; the first fabric layer is provided with a hot-pressing groove. The reinforced warm-keeping fabric has excellent warm-keeping and waterproof washing functions; according to the down jacket, the down storage space is large, down cannot move at will, and down leakage and down leakage are avoided. 本发明提供一种适用于羽绒服的加固保暖面料及羽绒服及其制备方法，所述加固保暖面料包括：第一面料层、棉质层和第二面料层；所述棉质层设置于所述第一面料层和第二面料层中间；所述第一面料层设置有热压凹槽。所述加固保暖面料具有优异的保暖和防水洗功能；所述羽绒服羽绒储存空间大，羽绒不会随意移动，不钻绒不跑绒。