The bi-directional dynamic cohort study is to learn about the effects of prenatal exposure to high blood glucose levels and postnatal nurturing environment factors on delayed language development in children. The study investigated the results of blood glucose screening during pregnancy for the children's mothers, and followed up on the blood glucose management effectiveness of pregnant women with abnormal blood glucose levels before delivery. Participants will be also surveyed the S-S method for language development assessment, gsell Scale, and 0-6 year-old family nurturing environment evaluation scale to evaluate the language development and family nurturing environment.