Longan can be eaten in small amounts during pregnancy, but not in excess. 1. Longan is very rich in vitamin C and iron and other nutrients. Eating longan in moderation can help prevent anemia during pregnancy by replenishing vitamin C and iron, and can also improve a pregnant woman’s ability to resist disease. 2. Longan is a warm fruit, and eating it in small amounts will not have any adverse effects. However, eating a lot of longan may cause vaginal redness and abdominal pain in pregnant women, which may lead to miscarriage or premature birth in serious cases. Women during pregnancy should be aware of the principle of moderation when eating any food, as over-eating is not good for the healthy development of the fetus.