Abstract: The gasification reactivity of six kinds of typical Chinese anthracite chars with steam and CO2 at 0.1MPa and 920℃~1050℃ was investigated comparatively using thermogravimetric analysis (TGA). The results show that the gasification reactivity of anthracite chars with steam has a good correlation with the coal rank, i.e. the higher the coal rank, the lower the reactivity. The gasification reactivity of anthracite chars with CO2 is related to the catalytic effect of mineral matter in coal, i.e. the higher catalytic effect leads to higher gasification reactivity. The gasification reactivity of anthracite chars with steam is about 10 times higher than that of chars with CO2. Gasification mechanism has been discussed preliminarily.