Abstract: Hyperglycemia during pregnancy is the most common complication of pregnancy.Poor control of blood glucose during pregnancy will increase the incidence of adverse pregnancy outcome，including various maternal and fetal risks in the short and long term.In this paper，we will introduce the relationship between poor blood control of glucose and adverse pregnancy outcome，so as to improve the awareness of health care workers and pregnant women with diabetes mellitus on the harm of hyperglycemia during pregnancy.

Key words: gestational diabetes mellitus, hyperglycemia, pre-gestational diabetes, pregnancy outcome

摘要： 妊娠期高血糖是最常见的一种妊娠并发症。孕期血糖控制不佳，会增加不良妊娠结局的发生，包括近远期的各种母儿风险。文章拟通过介绍血糖控制不佳与不良妊娠结局的关系，提高医护人员和妊娠合并糖尿病患者对妊娠期高血糖危害的认识。

关键词: 妊娠期糖尿病, 高血糖, 孕前糖尿病, 妊娠结局