A device for preventing interior temperature and
humidity of a protection suit from being excessively high comprises a closed protection suit, a
waist crotch belt, a miniature sucking pump, a coolingstructure, a
drying structure, an air inlet tube, an air outlet tube, a power supply and a control structure and is characterized in that the wait portion of the closed protection suit is provide witha
crotch belt fixing structure, the
waist crotch belt is arranged on the protection suit through the crotch belt fixing structure, the miniature sucking pump, the cooling structure and the
drying structure are all provided with air inlets and air outlets, sequential connection of the structures is achieved through connection of the air outlet of the previous structure and the air inlet of the later structure, the air inlet of the frontmost structure is connected with an air inlet tube, and the air outlet of the backmost structure is connected with an air outlet tube. The miniature sucking pump, the cooling structure and the
drying structure are arranged on the
waist crotch belt through hanging structures, and an orifice of the air inlet tube and an orifice of the air outlet tube are formed in different parts of the protection suit. It is achieved that high-temperature and high-
humidity air is sucked into the device from all body parts and then the device delivers the high-temperatureand high-
humidity air back to the body parts.