The aimed of the study was to research of main risk factors leads to development of gestational diabetes mellitus and based on the data received to creation of scale for predicting the development of this disease in women. Methods: The study included 137 pregnant women with gestational diabetes mellitus (GDM) and 100 without disorders of carbohydrate metabolism, who gave birth during the period: II quarter of 2018 II quarter of 2019 in the maternity ward of the city clinical hospital No. 29 named after N.E. Bauman in Moscow. This was a retrospective case-control study. Results: the highest pregestational body mass was in women with GDM insulin therapy. The amount women with obesity in both groups with GDM formed 40%. Based on the data received analysis questionnaire was created to identify high-risk patients during pregnancy planning. Conclusion: The introduction of the proposed questionnaire into the practice will allow for personalized pregravid preparation. © 2020 EManuscript Technologies. All rights reserved.