1, blanching freezing method: Toona sinensis is washed several times, poured into a pot with boiling water, blanched once, and the Toona sinensis quickly turns over; After the water turns green, pick up the Toona sinensis and put it in cold water, let it cool, drain the water and spread it out; Put it in a fresh-keeping bag, tie the bag tightly, and then put it in the freezer.

2. Pickling method: Toona sinensis is washed and drained, then the Toona sinensis and crude salt are mixed according to the ratio of 10: 1, stirred evenly and pickled for three hours; Turn it once after three hours, and then continue to marinate for three hours. Put the pickled Toona sinensis into a fresh-keeping bag, seal it and put it in the refrigerator for frozen storage.

3. Drying method: Toona sinensis buds can be dried and preserved. Before eating, it is best to blanch in boiling water for 30 seconds to 1 min, which can remove nitrite and oxalic acid, make the taste of Toona sinensis buds better and be beneficial to the absorption of nutrients.