Most fetuses with intrauterine growth retardation have a tendency to catch up in weight gain after birth and generally have no excessive impact on later life if the brain is not injured. However, some fetuses may have a series of complications, which may affect their future growth and life to varying degrees, including congenital malformations, hypoglycemia, erythrocytosis-hypermucosity syndrome, etc. 1. congenital malformations: fetuses with intrauterine growth retardation due to congenital chromosomal aberrations and chronic intrauterine infections can have malformations at birth; 2. hypoglycemia: fetuses with reduced glycogen storage and relatively high insulin levels are affected by the conversion of various substances in the energy system. The level of insulin is relatively high, and the conversion of various substances in the energy system is restricted, so if there is hypoxia at birth, it will make the situation even worse, and hypoglycemia is very likely to occur. The mother should open the milk as soon as possible to prevent hypoglycemia in newborns, and cooperate with doctors to monitor, if hypoglycemia, give treatment; 3, erythrocytosis – hyperviscosity syndrome: fetal intrauterine chronic hypoxia, in the erythrocyte increase to a certain extent will cause neonatal systemic organ damage, heart enlargement, jaundice, respiratory distress and other manifestations of erythrocytosis – hyperviscosity syndrome; 4, other Diseases: In addition to the above, children with severe intrauterine growth retardation may have lifelong growth retardation, low learning and cognitive ability, motor dysfunction, and delayed sexual development in adulthood. The incidence of insulin-resistant diabetes mellitus, lipid metabolism disorders, and cardiovascular disease is higher in adults than in the general population. Intrauterine growth retardation has a greater impact on the fetus, so mothers should pay attention to it, strengthen pregnancy care, cooperate with doctors for intrauterine monitoring of the fetus, timely detection of intrauterine growth retardation and early intervention and treatment.