Quick freezing is a quick freezing method of low temperature preservation. The so-called quick-frozen fruits and vegetables means that the processed fruits and vegetables are frozen by rapid freezing, and then stored at a low temperature of - 18 ° C ~ - 20 ° C for use. Quick freezing preservation was a way to preserve the original flavor and rich components of fruits and vegetables to a great extent in the processing and preservation skills of fruits and vegetables at that time. Quick frozen assorted vegetables can be preserved in this way.