An embodiment of the invention provides environment-friendly functional anhydrous stemming and a preparation method thereof. The anhydrous stemming is prepared from specific components by mass as follows: 20-30 parts of corundum or alumina, 5-10 parts of corundum or alumina dusting powder, 5-10 parts of silicon carbide, 5-10 parts of pyrophyllite, 5-10 parts of modified alumina powder, 5-8 parts of carbide dusting powder, 1-3 parts of phenolic resin powder, 0-20 parts of ferro-silicon nitride, 5-15 parts of soft clay, 3-7 parts of kyanite, 3-15 parts of dry quenched coke, 0-5 parts of sericite, 5-15 parts of aluminum and titanium slag and 15-20 parts of modified resin. A taphole channel maintaining and repairing function is further developed besides the characteristics of traditional stemming, the anhydrous stemming is multifunctional, various recycled industrial materials are used, efficient use of material value is realized, and energy saving and environmental protection are realized.