The utility model provides a clothes drying machine which is provided a hot pump and capable of effectively refrigerate the space with the clothes drying machine with simple structure and relatively high drying performance. The utility model is characterized in that a rotary groove(3) facilitates the air in a drying chamber to be recycled in an evaporator(42) provided with the hot pump(46) and a ventilation path(39) of a condenser(43) so that the clothes are dried. A changeover stop board(52) facilitates the air out of the ventilation path(39) to be absorbed into an air suction port(55) on the ventilation path(39) or the cold air in the ventilation path(39) to be discharged out of the drying machine; wherein the ventilation path(39) is closer to the rotary groove(3) than the part equipped with the evaporator(42), namely, the part on the drying chamber is provided with an air exhaust port(54) externally communicated with the ventilation path(39). When an air discharge path(51) is opened, the changeover stop board(52) seals the air exhaust port(54).