Objective: To investigate the correlation of the gestation period age and the GDM disease rate among the gestational women who are treated in our hospital. Methods: To investigate by questionnaire on randomly selected gravidae who took part in OGTT of their own free will. These gravidae were ordinarily resident during July 2014 to March 2015 in Zhengzhou administrative region around the 24th to 28th week, were treated in our hospital. Meanwhile, the gravidae went for medical examination and laboratory examination. In addition, venous whole blood sampling was collected to measure levels of sugar in the blood. According to standard diagnosis of GDM, recommended by Perinatal Medical Branch of the Chinese Medical Association, we found there were 154 patients in totally screening 986 pregnant women patients, which the GDM disease rate is 15.62%. In accordance with the gestation period age, we divided the gravidae into A\B\C\D four groups. There are 78 patients in Group A, whose ages are less than or equal to 23 years old. There are 545 patients in Group B, whose ages are between 24 to 29-years-olds. There are 248 patients in Group C, whose ages are between 30 to 34-years-olds. There are 115 patients in Group D, whose ages are older than or equal to 35 years old. Results: During operation, the GDM disease rate of Group D is outstandingly higher than others(P<0.01). What's more, age greater than or equal to 35 years old of the gravidae are not merely high prevalence but also serious degree. Conclusion: We found the GDM disease rate is 15.62%. These gravidae were ordinarily resident in Zhengzhou administrative region, who were treated in our hospital around 9 months. The gestation period age is one of risk factors. In order to protect maternal and child health, we would better to detect and diagnose GDM as early as possible. In addition, to facilitate control GDM among patients. 目的 了解本院定期围产保健孕妇妊娠年龄与妊娠期糖尿病（GDM）发病率及相关性。方法 随机选择2014年7月至2015年3月长期在郑州市行政区内居住，在本院产科就诊的孕24～28周，自愿做OGTT的孕妇进行问卷调查，同时进行体格检查和实验室检查，采集静脉全血以测定血糖值。以中华医学会围生医学分会推荐的标准诊断GDM，共筛查986例孕妇发现GDM 154 例，其发病率为 15.62%，按孕妇年龄分为A、B、C、D 四组，A组为≤23岁78例，B组为24～29岁545例，C组为30～34岁248例，D组≥35岁115例，对妊娠期糖尿病的发生率进行调查分析。结果 D组妊娠期糖尿病发生率显著高于A、B、C三组（P<0.01），而孕妇年龄≥35岁者发病率不但高且程度重。结论 郑州市行政区在本院定期围产保健孕妇近9个月GDM 发病率为15.62%，孕妇年龄是危险性因素，尽量早期发现及诊断GDM，加强对GDM患者的管理，确保母婴健康
