选取 18户新装修居室 ,通过室内连续定期定点采样 ,用变色酸法测定 ,研究了新装修材料影响室内甲醛含量增加的因素 ,根据室内甲醛浓度 -时间动力学曲线 ,提出了合理的搬迁时间。 18 newly renovated rooms were selected and sampled regularly by indoor continuous indoor sampling. The factors that affected the increase of indoor formaldehyde content by newly renovated materials were investigated by chromogenic acid method. According to the indoor formaldehyde concentration-time kinetic curve, a reasonable relocation time was proposed.