Longan can be eaten occasionally and in small amounts during late pregnancy, but not frequently or in large amounts. Longan is relatively rich in iron, which has a preventive and relieving effect on the symptoms of anemia during pregnancy. Moreover, longan has the effect of nourishing blood and calming the mind, which can improve the symptoms of poor sleep during pregnancy. Longan is also high in amino acids, glucose, various vitamin-like nutrients and other bioactive substances. Eating small amounts during pregnancy can replenish these nutrients and promote the physical and neurological development of the baby, as well as improve the disease resistance of pregnant women. However, due to the nature of longan, it is relatively warm. If eaten in excess during pregnancy, pregnant women are prone to constipation, sores in the mouth and sore throat, which is not conducive to the maintenance of the pregnancy process.