The present invention relates to an LED mask that generates heat by using a cooling water circulation system, and more particularly, to a technology in which heat generated by an LED inside the LED mask is circulated to generate heat by circulating cooling water located outside the LED mask. In addition, it is possible to provide a technology for irradiating light sources of various colors to the skin by designating or calling the pattern stored using the LCD or FND of the present invention to generate five or more color conversions. The composition is as follows The shape is a human face shape and a body 10 capable of covering the user's face, A sensing unit 11 that detects the temperature of the face (corresponding to body temperature) inside the body 10, A circuit board 20 to which a plurality of LEDs (not shown) are connected inside the body 10, a heat sink 40 and a circulating water pipe 50 in close contact with the circuit board 20, The other side of the discharge pipe 60 is connected to one side of the circulating water pipe 50, The other side of the circulating water pipe 50 is connected to the other side of the water return pipe 70, One side of the discharge pipe 60 and one side of the water return pipe 70 are provided with a discharge port 81 of the circulation motor 80 Each connected to the water return port 82 of the circulation motor 80, the discharge pipe 60 to the water return pipe 70 Passing through the cooling plate 101 of the thermoelectric element 100, In a state in which the user's face surface is detected through the sensing unit 11 When the temperature of the circuit board 30 rises due to the light emission of the LED 20 and the surface temperature of the face reaches a set temperature or higher, the circulation motor 80 is operated to circulate the circulating water cooled by the cooling plate 101 so that the circuit board 30 To cool down, When the face surface temperature detected through the sensing unit 11 is below the set temperature It fe
