Gestational diabetes is a public health problem that requires special monitoring given the divertit of factors involved. The specific objectives of this study are: to describe the epidemiological profile of pregnant women in order to identify the particularities of those who develop gestational diabetes; and then calculate the relative risk of gestational diabetes in pregnant women. Nine Teen (19) pregnant women were being investigated at the Kimbanseke maternity hospital in the eastern part of the city of Kinshasa. Data are collected through interviews and observations. These data concerned socio-demographic characteristics, paraclinical examinations (blood glucose), family, medical, gynaecological and obstetric history as well as dietary habits. Seven (7) pregnant women had developed gestational diabetes, an incidence rate of 36.84%. Regarding history: the risk of gestational diabetes increases with lack of occupation (1.61 times); in the first and second trimester of pregnancy (1.60 times) and with large mass (1.15 times). This risk is higher if the pregnant person has a history of diabetes (2.76 times); hyperglycemia (2.28 times); if the pregnant woman has had surgery for ovarian cyst (2.13 times) and if she had given birth with malformation with malformation in the past (1.50 times). For pregnant women with glycosuria (5.40 times); angina infection (3.73 times); if high blood pressure (2.76 times); in case of genital infection (1.81 times); obesity (1.62 times); if fasting blood glucose is high (1,15 times). As for treatment habits: the risk is 8.25 times higher for pregnant women taking insulin; and 5.41 times more for pregnant women on diet. We conclude that the risk of gestational diabetes increases with sociodemographic profile, medical, surgical, obstetric history, and treatment habits.