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近年来，糖尿病发病率逐年上升，且发病年龄有逐年下降的趋势。空腹血糖诊断糖尿病具有快速、经济、简便和易被受检者接受的特点，一直被临床广泛应用。目前，世界卫生组织制订的空腹血糖诊断糖尿病标准依然偏高，导致漏诊率很高。选择一个合理的早期诊断糖尿病的空腹血糖截点成为研究的热点问题。该文就近年来国内外文献对空腹血糖与糖尿病并发症的关系，以及下调空腹血糖截点对早期诊断糖尿病的价值进行了综述。“,”In recent years,the incidence of diabetes has been increasing year by year,and the age of onset has a downward trend.Detection of fasting blood glucose has been widely used in clinical to diagnose diabetes due to its characteristics of fast,economical,simple,and easily accepted.Currently,the WHO diag-nostic criteria of fasting blood glucose for diabetes remains high ,which leads to high rate of misdiagnosis,so choosing a reasonable cut-off point of fasting blood glucose for early diagnosis of diabetes has become a hot research spot.Here is to make a review of relationship between fasting blood glucose and diabetes complica-tions,and the value of down-regulating the cut-off point of fasting blood glucose in early diagnosis of diabetes basing on recent literatures worldwide.