Pregnancy cold if not cured for a long time or have serious complications of the cold, will cause adverse effects on the fetus, as follows: 1, the cold during pregnancy to clarify the cause of the cold, if the cold is caused by viral infection, in the uterus will infect the fetus, causing adverse effects; 2, pregnancy cold and high fever, will cause adverse effects on the fetus in the uterus, and even cause stillbirth; 3, pregnancy cold medication will also cause fetal malformations, etc; 4, mid- and late-pregnancy colds, due to the basic formation of various organs of the fetus, the impact of colds on the child in that period is smaller, if a high fever occurs, it also has an impact on the fetus, if complications of colds, such as severe coughing, can cause premature rupture of the fetal membranes and induce preterm delivery, so serious colds and colds with serious complications during pregnancy have an impact on the fetus.