Based on the data of indoor air in Harbin during 2011-2015,this paper analyzed the changing trends and influen-cing factors of indoor air quality in cold regions by describing the statistical and mathematical models. The results showed that the indoor air quality in cold regions tends to be improved year-by-year in pace with people's attention to interior decoration mate-rials and relentless pursuit of healthy life. The seasonal difference of indoor air quality is obvious, and the high temperature as well as humidity in room interior is favorable for pollutants released from furniture,building materials and other decoration materi-als to the air,so that the indoor air is poor. The factors such as how much use of interior decoration materials,the complexity of the decoration,are all positively correlated with indoor air quality.%以哈尔滨市2011年-2015年室内环境空气数据资料为基础,通过描述统计和数学模型分析了寒冷地区室内环境空气质量的变化趋势和影响因素.分析结果表明,寒冷地区室内环境空气质量随着人们对室内装修材料的不断重视和对健康的生活不懈追求呈逐年好转趋势;室内环境空气质量季节差别明显,房屋室内温湿度高有利于污染物从家具建材等装修材料中向空气中释放,从而使室内空气较差;室内装修材料使用多少、装修程度复杂或简单,都与室内环境空气质量呈正相关关系.
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