Abstract: Abstract: The cold storage facility exhibited features of energy wasting and higher running cost. In underdeveloped regions that became one of the most important reasons to backward construction of storage and preservation facility of fruit and vegetable. This problem was obstacle for sound development of storage and keeping-fresh industry of fruit and vegetable in China. In order to solve the problem above, and accelerate the construction of cold storage facility in site of production, it would build new energy-saving cold storage facility. The cold storage with ethylene glycol as secondary refrigerant was developed. The newly developed cold storage was composed of 3 circle systems, i.e. compressor refrigeration system, secondary refrigerant cycle system, and cold storage room refrigeration system. The phase-changed material was ethylene glycol, which was widely used in ice-storage air-condition. For exploring possibility of cold storage with ethylene glycol as secondary refrigerant for storage and preservation of fruit, performance, storage and preservation effects, and running cost of the new cold storage were analyzed. To detect performance, temperatures at different sites in the cold storage room and evaporator output draught were measured. Over the period of the experiments, average temperature at 5 test sites of the newly developed freezer is 0.18-0.32 ℃, while the same index of control cold storage is ?0.10-1.00 ℃. The maximum temperature difference of the newly developed refrigerator among test sites is 0.8 ℃, less than 1.5 ℃ of control cold storage. Temperature fluctuation range of evaporator output draught of the newly developed cold storage is ?0.8 - ?0.2 ℃, less than that of control cold storage. All these results indicate that cold storage with ethylene glycol as secondary refrigerant shows preferable temperature stability and uniformity, which is useful to guarantee good storage quality of fruit. To analyze storage and preservation effects, both newly developed freezer and control cold storage were used to store Huangguan pear, and the postharvest quality was detected, such as weight loss, soluble solids content, rot rate, and brown heart rate. Weight loss and brown heart rate of Huangguan pear stored by the newly developed refrigerator are smaller than those by control cold storage, and there is no significant difference between cold storage with ethylene glycol as secondary refrigerant and control cold storage in storage effects of Huangguan pear. The power consumption of a cold storage with ethylene glycol as secondary refrigerant with 30 t capacity is about 7 523.12 kW?h, which is a little higher than that of control cold storage. Using peak and valley price, electricity bill of developed cold storage is only 75% of that of control cold storage. Overall, compared with control cold storage, the newly developed cold storage with ethylene glycol as secondary refrigerant shows good performance, satisfactory fresh-keeping effect, and lower running cost, which indicates this developed storage facility is suitable for storage and preservation of fruit in area using peak and valley price policy.