The invention provides an independent humidifying type fruit and vegetable ice-temperature stereoscopic storehouse carbon dioxide refrigerating system. The system structurally comprises a circulatingbarrel, a compressor, a condenser, liquid accumulators and an evaporator. The evaporator is mounted in a refrigeration house. The condenser is embedded underground so as to conduct heat exchange directly with the earth or underground water. A carbon dioxide refrigerant ceaselessly flows in a circulation loop to realize continuous refrigerating on the refrigeration house. Carbon dioxide belongs toa unique working medium of the refrigerating system. Even if the carbon dioxide refrigerant leaks underground, underground water resources cannot be polluted, and the underground ecological balance cannot be destructed. The evaporator comprises air coolers and overhead exhaust pipes. The refrigeration house is subjected to cooling and precooling through the air coolers, and then the overhead exhaust pipes conduct cyclic refrigerating to keep the internal temperature of the refrigeration house stable, so that the fluctuation range of the temperature difference in the refrigeration house is verysmall. Accordingly, ice-temperature storage is realized. Since the condenser is embedded underground and can conduct heat exchange directly with the earth, loss of mechanical energy during condensation heat exchange is avoided, and energy consumption is remarkably reduced.