The present invention relates to a skin fever thermometer with exothermic liquid or exothermic cosmetics and a temperature display method. The present invention includes: a case having a predetermined inner space, and comprising a case body including a cover including a check hole in an opened lower part having a rectangular shape a control board installed inside the case body for operation and control to display an average value or maximum value by measuring the temperature of skin covered with exothermic cosmetics or exothermic liquid for diet and then wrapped with plastic wrap a display part, in electric connection with the control board, installed inside the case body to display an average value or maximum value of a temperature which is operated by measuring a temperature of a wrapped part of skin covered with exothermic cosmetics or exothermic liquid for diet an LED lamp installed in the case body by being electrically connected with the control board in order to check the temperature of the part, covered with the exothermic cosmetics or exothermic liquid, even without checking the display by displaying the temperature in colors and an indication part installed in the upper part of the case body in a side of the LED lamp in order to check how the current temperature goes depending on a color of light emitted from the LED lamp. As such, the present invention is capable of maximizing skin improvement or diet by enabling a user to identify how high the temperature is increasing or whether fever is being made as the user is able to measure the temperature of skin after covering the skin with the exothermic cosmetics or exothermic liquid and then wrapping the skin.본 발명은 발열액 또는 발열 화장품에 의한 피부 발열 온도 측정기 및 온도 표시 방법에 관한 것으로, 내측에 일정한 공간을 가지며 하부가 개방된 상태로 사각형상으로 이루어진 개방된 하부에 체크공을 갖는 덮개를 갖는 케이스몸체로 구성하는 케이스와 다이어트용 발열액 또는 피부 개선용 화장품을 바른 피부에 비닐랩을 감은 상태에서 체온을 측정하여 평균값 또는 최대값를 표시하기 위해 연산 및 컨트롤할 수 있도록 케이스몸체 내측에 설치하는 컨트롤보드와 다이어트용 발열액 또는 발열 화장품을 바른 피부에 랩핑 한 부분의 온도를 측정하여 연산한 온도의 평균값
