Mint is an edible plant, fresh mint leaves have a special cooling sensation and a unique aroma. When the fresh mint leaves are picked, they can be eaten directly after washing, or soaked in water, or used as a seasoning to be processed into cakes, desserts, soups, and porridges. Mint is also a commonly used traditional Chinese medicine. Oral use can treat symptoms such as colds, getting angry, sore throat, and external use can treat skin pruritus, rashes, and other symptoms. However, the preservation time of fresh mint is very short, and it needs to be dried to extend the preservation time.