To explore the indoor air pollution at rural houses in severe cold region in winter, a field study was conducted at 10 rural houses in two villages around Harbin. The indoor pollutants including PM2.5, PM₁₀, CO, CO₂, SO₂, NO_x, TVOC and NH₃ were tested and the correlation of pollutants were analyzed. The results showed that PM2.5, PM₁₀, SO₂, NO_x, CO₂ and CO were the main pollutants at rural houses in winter, with the overproof rates of 93％, 75％, 62％, 23％, 99％, 64％, respectively. There were good relations between PM₁₀ and PM2.5, CO and PM2.5, respectively. In addition, the linear correlations were also found between SO₂ and CO₂, NO_x and SO₂, respectively. The main test indices of pollutants were given based on the regression analysis results. The test method of pollutants was proposed at rural houses in severe cold region in winter.