Downproof piling-proof warm down coat

The invention relates to a downproof piling-proof warm down coat comprising shell fabric (1), filler material (2) and a liner (3). The liner (3) is divided into a plurality of small diamond cells (4) by threads; the diamond cells (4) are filled with down; the shell fabric (1) comprise a thermoregulation fabric layer and a heat-resisting layer at least; the material of the thermoregulation fabric layer features moisture absorption and heat generation; a difference between moisture regains of the shell fabric of the thermoregulation fabric layer under the relative humidities 80% and 50% is 2% to 7%. The outer surface, adjacent to the thermoregulation fabric layer, of the heat-resisting layer is used for decreasing heat, dissipating out, of the thermoregulation fabric layer, and warmth is retained. The downproof piling-proof warm down coat further comprises a dry-cool fabric layer on the inner surface of the thermoregulation fabric layer; the shell fabric of the dry-cool fabric layer has a moisture regain 0.02% to 0.08% under the relative humidity 60%. The downproof piling-proof warm down coat has the advantages that down penetration and down piling are achieved by effective increase in friction with the down and prevention of down penetration, and warmth retention is effective.