Abstract: sMedical nutrition therapy (MNT) is the basic therapy for gestational diabetes mellitus (GDM), and the common nutrition therapy patterns include low carbohydrate diet pattern, low glycemic index diet pattern, low glycemic load diet pattern, and the mediterranean diet pattern, but the most suitable dietary pattern for GDM patients is still controversial. This paper discussed the characteristics of different dietary patterns and their applications in GDM in order to provide reference for the nutritional treatment of GDM.