The invention discloses a safety helmet capable of measuring temperature and cooling and a use method, and belongs to the technical field of labor protection safety articles. The safety helmet comprises an outer helmet shell, an inner helmet layer and a
visor, wherein the inner helmet layer is located in the outer helmet shell, and the
visor is located on the outer helmet shell. The safety helmetfurther comprises a lower jaw belt contraction unit, a temperature measuring unit and a cooling unit, wherein the lower jaw belt contraction unit comprises a lower jaw belt and a contraction part, thelower jaw belt is fixedly connected with the contraction part, the contraction part is fixedly connected with the
visor, and the contraction part is suitable for contracting one end of the lower jawbelt; the temperature measuring unit comprises an
infrared temperature measuring sensor, a mounting hole is formed in the visor, the
infrared temperature measuring sensor is mounted in the visor, andthe
infrared temperature measuring sensor is suitable for measuring the body temperature; and the cooling unit comprises a refrigerating part and a retracting part, the refrigerating part is mounted in the outer helmet shell, the refrigerating part is suitable for reducing the
internal temperature of the inner helmet layer, the retracting part is located on the inner helmet layer, and the retracting part moves on the surface of the inner helmet layer. With the safety helmet, the
sun protection and heat dissipation of constructors working under the high-altitude burning sun are realized, and the conditions of
heatstroke and the like of the constructors are avoided.