Longan contains glucose, vitamins, sucrose and other substances, which are rich in nutrition and have the functions of nourishing the heart, calming the nerves, nourishing blood and benefiting the spleen. People regard it as a good tonic, and it also has the effects of promoting fluid production, invigorating qi, strengthening brain and heart. It is not only suitable for all women and children, those who are physically weak after illness, but also has a good skin rejuvenation and beauty effect for women. Longan is fresh, sweet and delicious, and it is a special fruit from the south. This fruit is the king of nutrition. Longan can be preserved for a long time after peeling, coring, drying and processing. Longan meat has the effects of benefiting the heart and spleen, nourishing qi and blood, and calming the nerves. This kind of blood-enriching food is very famous among the people, and it is definitely the first choice for ordinary families to enrich blood. It is rich in iron. In addition, it is rich in vitamins A and B, glucose, sucrose and so on. It has a good curative effect on amnesia, palpitation and insomnia caused by neurasthenia.