Immediately after shearing, floral materials are frozen and stored in a low-temperature environment. Such treatment can significantly inhibit the production of ethylene in the body, reduce the respiration, and effectively reduce the loss of nutrients and moisture in the body. For a large number of flowers can be carried out in a large cold storage, a small amount of household materials can be processed in the refrigerator. For different flowers, the suitable storage temperature is different, and the suitable storage temperature for tropical and subtropical flowers is 5-15°C; the suitable storage temperature for temperate flowers is 0-4°C.