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目的:初步分析严寒和寒冷地区建筑节能设计对居室氡浓度的影响。方法:选择哈尔滨、佳木斯、沈阳、西宁、银川共5个城市的25户住宅，密闭门窗24 h测量氡浓度及其子体和换气率。采用RAD7测氡仪连续测量室内氡浓度，BWLM-PLUS工作水平氡子体测量仪连续测量氡子体，采用示踪气体稀释法测室内换气率。结果:25户住宅密闭门窗24 h，室内氡浓度均值为122 Bq/mn 3，范围为33～255 Bq/mn 3，室内氡浓度24 h均值有36%超过了150 Bq/mn 3。室内氡子体平衡因子均值为0.47，范围为0.20～0.72，换气率的均值为0.19次/h，范围为0.05～0.39次/h。室内氡浓度随房屋建筑年代的变化呈现增高的趋势，而换气率随房屋建筑年代的变化呈现降低趋势。n 结论:严格的建筑节能设计是近年我国居室氡浓度增加的重要影响因素，节能居住建筑的室内氡污染问题值得关注。“,”Objective:To investigate the influence of energy-saving design of residential buildings with respect to indoor radon concentrations in the severe-cold areas and cold areas.Methods:The indoor radon concentration and ventilation rate were measured inside 25 houses in 5 different cities. The indoor radon concentration was measured by using RAD7 radon instrument and its progeny concentrations were measured continuously using BWLM-PLUS working level monitor, respectively. The measurement period was 24 h for each dwelling in the condition that doors and windows were closed. The air exchange rate was measured using tracer gas dilution method .Results:The average indoor radon concentration was 122 Bq/mn 3, in the range of 33-255 Bq/mn 3 during a 24 h-measurement period, with some exceeding 150 Bq/mn 3 in approximately 36% of measured dwellings. The average radon progeny equilibrium factor was 0.47, ranging from 0.20 to 0.72. The average air exchange rates was 0.19/h, in range of 0.05-0.39/h. The indoor radon concentration showed an increase with the year of construction. However, the ventilation rate decreased with the year of construction.n Conclusions:The energy saving design of residential buildings is an important influence factor that leads to the increase in radon concentration in China in recent years. The problem that energy-saving design of residential buildings could lead to indoor radon pollution is worthy of attention.