The invention relates to the field of fireproof doors, and particularly relates to a flame-retardant fireproof door. The flame-retardant fireproof door comprises a door plate, a door frame, a handle and a hinge which form the fireproof door, wherein a pressurizing assembly is fixedly mounted in the center of the top of the door plate and fixedly connected with an output shaft of a motor, the motor is fixedly connected with a fixing assembly, the fixing assembly is fixed on a wall, a blocking assembly is arranged in the center of the top of the door plate, an outlet of the pressurizing assembly is blocked by the blocking assembly in a sleeving manner, and a switch assembly is fixed on the side edge of a U-shaped column. The problems that when an existing normally closed fireproof door is used, particularly when a fire occurs and the fire is fierce, the door is difficult to open, on one hand, the situation that the door becomes hot due to the fire when the fire occurs is ignored, and survivors cannot smoothly open the fireproof door for escape, and on the other hand, the fireproof door can only prevent the door plate from fire within a certain period of time and cannot open an escape channel for the survivors when the fire is fierce can be solved.