NOVELTY - Use of tourmaline powder for improving anaerobic ammonia oxidizing bacteria denitrification property, is claimed, where the application method comprises culturing anaerobic ammonia oxidizing bacteria, cleaning, drying, crushing and grinding the black tourmaline to obtain tourmaline powder, adding anaerobic ammonia oxidation sewage in a reactor, washing, precipitating, centrifuging to remove upper layer suspension, adding tourmaline powder in a reaction bottle, regulating the pH value to be 5-11, aerating nitrogen, sealing, and keeping the temperature at 35 degrees C under dark condition.    USE - The tourmaline powder is useful for improving anaerobic ammonia oxidizing bacteria denitrification property (claimed) and processing high ammonia nitrogen waste water.    ADVANTAGE - The tourmaline powder improves anaerobic ammonia oxidizing bacteria denitrification property and removes total nitrogen from the waste water, in a simple, eco-friendly and cost-effective manner.    DETAILED DESCRIPTION - Use of tourmaline powder for improving anaerobic ammonia oxidizing bacteria denitrification property, is claimed, where the application method comprises culturing anaerobic ammonia oxidizing bacteria, cleaning, drying, crushing and grinding the black tourmaline to obtain tourmaline powder, adding anaerobic ammonia oxidation sewage in a reactor, washing, precipitating, centrifuging to remove upper layer suspension, adding tourmaline powder having concentration of 10-400 g (gVSS.L)-1 in a reaction bottle, regulating the pH value to be 5-11, aerating nitrogen, sealing, and keeping the temperature at 35 degrees C under dark condition. The sludge is composed of 30-70 mg/l of nitrogen source, 40-100 mg/l of nitrogen dioxide, 1.25 g/L of Potassium bicarbonate, 0.025g/l of Monopotassium phosphate, 0.3 g/L of calcium chloride dihydrate, 0.2 g/L of magnesium sulfate heptahydrate, 0.00625 g/L of iron (II) sulfate, and 1.25 ml/l trace element solution comprising 15 g/l of EDTA, 0.43 g/L of zinc sulfate heptahydrate, 0.24 g/L of cobalt(II) chloride hexahydrate, 0.99 g/L of manganese(II) chloride tetrahydrate, 0.25 g/L of copper (II) sulfate pentahydrate, 0.22 g/L of sodium-molybdate-dihydrate, 0.19 g/L of nickel(II) chloride dihydrate, O. 21 g/L of sodium selenate decahydrate, 0.014g/L of boric acid and 0.050g/L of sodium-tungstate-dihydrate and 1 gVSS/L of microorganism.