Garment flattening device for garment processing

The utility model relates to the technical field of garment processing, in particular to a garment flattening device for garment processing, which comprises a flattening box which is a main body of the garment flattening device for garment processing, and garments to be flattened are placed in the flattening box. The defects in the prior art are overcome, the cooling water cavity, the heating water cavity, the refrigerator, the belt wheel and the flat belt are arranged, when the pressing plate moves along to-be-flattened clothes, the flat belt attached to the heating water cavity moves out step by step to make contact with and extrude the to-be-flattened clothes, and the to-be-flattened clothes can be heated and pressurized; then the to-be-flattened clothes are moved out to make contact with the to-be-flattened clothes in one step through the flat belt attached to the cooling water cavity, the to-be-flattened clothes can be cooled and pressurized, and the to-be-flattened clothes are formed more permanently af