Abstract: Gestational obesity refers to the status of pregnant women with excessive accumulation of adipose tissue. Recent years, the incidence of gestational obesity showed a rapid growing, the increasing obesity bring serious influence on pregnant women and perinatal infants, resulting in a profound impact on human health. In order to control maternal weight under the premise of the nutrient supplies of maternal and fetal and to protect the health delivery, it is significant to understand the impact of various factors, recognize the influence of gestational obesity on mother and infant, and develop scientific and effective treatment and management project. According to extensive literature reference, the article starts from the metabolic characteristics of obese pregnant women, analyses the impact of obesity on pregnancy complications, stages of labor and the fetus, then, do a summary for obese pregnant women about the nutritional needs and diet prescriptions, so that it can provide a reference for doctors in clinical work.

Key words: Pregnant women, Obesity, Nutritional requirements, Diet therapy