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目标范围内时间（TIR）是指24 h内血糖在目标范围的时间或其所占百分比，或血糖高于目标范围时间和低于目标范围时间。TIR作为持续葡萄糖监测的核心参数，逐渐成为糖尿病患者血糖监测与治疗评估的重要参考指标。诸多研究证实，TIR与糖尿病心血管并发症密切相关，未来可能成为预测糖尿病心血管并发症风险的关键指标。文章就TIR与糖尿病心血管并发症关系的研究进展作一综述，探讨TIR在“糖心共治”理念中的应用价值。

Time in range (TIR) refers to the time or percentage of time within 24 h that glucose levels are in the target range; or the time that blood glucose levels are higher and lower the target range. TIR is a core parameter of continuous glucose monitoring (CGM) and an important indicator for the evaluation of blood glucose in treatment of diabetic patients. Recent studies have confirmed that TIR is closely related to cardiovascular complications of diabetes, and it may become a key indicator for predicting the risk of cardiovascular complications in the future. This article reviews the research progress on the relationship between TIR and cardiovascular complications in diabetic patients, and discusses the value of TIR in the integrated management of diabetes and cardiovascular diseases.