多数的妊娠期糖尿病(GDM)是在晚孕早期,即28～30孕周,由于胎儿生长加速过多而被诊断。对胎儿的不良预后,需要尽快和有效的治疗,因此了解单纯依靠饮食达到控制血糖的时间和确定胰岛素的使用指征十分必要。孕24～28周产前检查时如1h50g糖耐量试验血糖≥130mg/dl,再行3h100g糖耐量 Most gestational diabetes mellitus (GDM) is diagnosed early in the first trimester of pregnancy, 28 to 30 weeks of gestation, due to excessive fetal growth. Unfavorable prognosis of the fetus requires prompt and effective treatment, so it is essential to understand the timing of glycemic control solely on the diet and the indication of insulin use. Pregnancy 24 ~ 28 weeks prenatal examination, such as 1h50g glucose tolerance test blood glucose ≥ 130mg / dl, then 3h100g glucose tolerance