In recent years

high temperature is increasingly frequent

which has a serious effect on the health of workers. Thus

it is necessary to develop a cooling garment to improve work conditions. The cooling performance of thermoelectric cooling garment is experimentally investigated in the paper. The studies show that: under working conditions of only one element of thermoelectric cooler

the temperature is basically equal at the same radius as the center of P0

and as the distance increases

the temperature difference of each measuring point reduces rapidly first and then slows down; under working conditions of three elements of thermoelectric cooler

the temperature exhibits some differences

and as the distance increases

the measuring point temperature difference of P5-P8 and P9-P12 first decrease and then rise

which has a significant turning point at the distance of 3cm; the overlap effect scope of thermoelectric cooling garment is a circle

the radius of 4cm at the center of P0

and at the same distance of two adjacent elements of thermoelectric cooler

the overlap effect is more obvious when the cooling center is located in the same horizontal line. This study provides some guidance for the application of thermoelectric cooling garment.