Abstract: Residential coal combustion is currently the largest primary PM_2.5 emission source among all China’s coal consumption sectors. This study compared PM_2.5 emission factors（EFs） from 18 raw coal and 6 semi-coke briquette samples in a typical heating stove, as well as one anthracite, one semi-coke briquette, and one bituminous samples burned in an advanced heating stove. Average PM_2.5 EFs for tested semi-coke samples is about 94% lower than that for tested raw coal samples, while the average PM_2.5 EF for the tested bituminous sample in the advanced stove is also about 94% lower than that in the traditional one. These results implicate that the replacement of current residential coal with semi-coke briquette and the improvement of residential stove technology can both benefit for the PM_2.5 emission reduction in China.