Occasional constipation in pregnancy does not have much effect on the fetus. Constipation may occur during pregnancy due to special diet or pressure of the fetus on the uterus, and long-term constipation may have some effects on the fetus and increase the risk of preterm delivery. How to relieve constipation during pregnancy, mainly from the dietary structure to improve, first of all, you should consume more food rich in dietary fiber, such as apples with skin, bananas, dragon fruit and kiwi fruit, etc., the main food can also add some miscellaneous grains, can promote intestinal movement. Drink more water to ensure that the daily water intake is about 1.5-2L, dietary fiber can play its best role under the action of water, and proper exercise can also keep the laxative. What is more important is to pay attention to rest and avoid excessive emotional tension, because excessive tension and anxiety can aggravate constipation. If you are not well with the above mentioned diet or regulation, if you have heavy symptoms and bloating is obvious, taking lactulose for a short period of time can also provide good relief and will not have much effect on the fetus. If the symptoms are not relieved by self-treatment, hospital consultation is recommended.