The invention discloses a high-temperature, high-pressure and high-turbulent-flow single-liquid-drop evaporation experiment device and a method thereof, wherein the device and the method belong to the field of internal combustion engine combustion testing technology. The device comprises an air supplying device, an evaporation constant-volume elastomer member (14) which is connected with the air supplying device, a fan (5) and a telescopic liquid drop suspension device (7) which are arranged in the evaporation constant-volume elastomer member (14), and a control unit (2) which is connected with the evaporation constant-volume elastomer member (14). The fan (5) comprises a transmission and a mounting supporting device therein. The constant-volume elastomer member (14) comprises a fan mounting port (19), an observing window (24), a pressure sensor (6) and a temperature sensor (8). The high-temperature, high-pressure and high-turbulent-flow single-liquid-drop evaporation experiment device and the method thereof can realize evaporation characteristic experiment research on the small liquid drop in different turbulent flow conditions.