the thermal insulation layer has better thermal insulation performance. The better the thermal insulation performance of the thermal insulation layer, the smaller the cooling consumption, and the smaller the fluctuation of the storage temperature, which is conducive to maintaining the quality of the storage, prolonging the storage time, reducing the drying shrinkage loss of the storage, and saving the investment and operation cost of the refrigeration equipment. Pay attention to the moistureproof outside the thermal insulation layer. The temperature on both sides of the cold storage enclosure is inconsistent, which is easy to form water vapor partial pressure difference. With the heat transfer, the water vapor outside the cold storage will penetrate into the cold storage, so a moisture-proof and gas-proof layer should be set up. There are three common moisture-proof methods: asphalt moisture-proof, plastic film moisture-proof and using metal sandwich plate as moisture-proof layer. Choose a suitable refrigeration system. Cold storage obtains the cooling capacity by artificial refrigeration. At present, liquid gasification refrigeration method or vapor refrigeration method is commonly used. Vapor refrigeration can be divided into three refrigeration modes: compression, absorption and injection, of which compression is the most widely used. Compression refrigerator is mainly composed of compressor, condenser, regulating valve and evaporator. It is a closed cycle system. Well-installed air extraction system. Food is easy to accumulate carbon dioxide, ethylene and other gaseous substances after being stored in the cold storage for a certain period of time, so it is necessary to install a good air extraction system so as to change in fresh air frequently, which is beneficial to the storage and preservation of food. Food cold storage is a building used for food freezing and cold storage. It keeps a certain low temperature in the warehouse by artificial refrigeration. In order to reduce the introduction of external heat, the floors, walls and roofs of cold storage are covered with a certain thickness of moisture-proof, gas-proof and thermal insulation layers. In the project management of food cold storage, scientific management should be carried out according to the characteristics of food cold storage to ensure safe production, and achieve the purposes of prolonging service life, reducing production costs, saving maintenance costs and improving economic benefits of enterprises.