A rapid powdered-milk preparing component comprising a milk bottle (1), a powdered-milk cartridge (2), and an insertion plate (3). The upper part of the powdered-milk cartridge (2) can be fittingly connected with a teat, while the lower part is threadedly connected with a milk bottle mouth (11) via a detachably connected second connection part (22). The second connection part (22) is provided thereon with an insertion plate opening (221) for insertion of the insertion plate (3) and with an opening (222) for supporting the insertion plate (3). When the insertion plate (3) is inserted, a support leg (31) of the insertion plate (3) is inserted into the opening (222), thereby supporting the insertion plate (3), thus allowing the upper surface of the insertion plate (3) to be tightly abutted against a lower part port of the powdered-milk cartridge (2) and to form a movable cartridge bottom of the powdered-milk cartridge (2). When the milk bottle (1) is connected with the powdered-milk cartridge (2), the milk bottle (1) can be rotated toward the direction of the powdered-milk cartridge (2) until the mouth (11) is tightly abutted against the lower surface of the insertion plate (3). When the insertion plate (3) is pulled out, the milk bottle (1) can continue to be rotated toward the direction of the powdered-milk cartridge (2) until the mouth (11) of the milk bottle (1) is abutted against the lower part port of the powdered-milk cartridge (2), thus allowing the connection between the milk bottle (1) and the powdered-milk cartridge (2) to be sealed and insulated from the exterior. The powdered-milk preparing component has simple and convenient steps when preparing powdered milk, allows for rapid completion of powdered-milk preparing, and is particularly suitable for preparing powdered-milk during nighttime.La présente invention concerne un composant de préparation de lait en poudre rapide, comprenant une bouteille de lait (1), une cartouche de lait en poudre (2), et une pla