NOVELTY - Treatment of wastewater containing stibonium with biological preparation, comprises adding biological preparation (10-50 g/L) while stirring, where mass ratio of biological preparation to stibonium is 10:30; conducting a 20-40-minute matching reaction and adding alkali for adjusting the pH of the system to 7-11; conducting hydrolysis reaction for 20-40 minutes while stirring; adding flocculating agent (2-6 g/m3); and precipitating, where supernatant fluid is recycled or drained, and the slag is sent back to the manufacturing system for recycling stibonium.    USE - Method of treating wastewater containing stibonium with biological preparation (claimed).    ADVANTAGE - The wastewater containing stibonium is efficiently treated. After recycling, the density of stibonium is lower than 0.5 mg/L. The method has simple technology and remarkable environmental benefit; and is easy to operate and high in economic benefit. The wastewater treated with the method can be sent back to the manufacturing system, decreasing the use of clean water.    DETAILED DESCRIPTION - Treatment of wastewater containing stibonium with biological preparation, comprises adding the biological preparation (10-50 g/L) while stirring, where mass ratio of biological preparation to stibonium is 10:30; conducting a 20-40-minute matching reaction and adding alkali for adjusting the pH of the system to 7-11; conducting hydrolysis reaction for 20-40 minutes while stirring; adding flocculating agent (2-6 g/m3); and precipitating, where supernatant fluid is recycled or drained, and the slag is sent back to the manufacturing system for recycling stibonium. The flocculating agent is polyacrylamide, polyferric sulfide, or polyalumina. The alkali added in hydrolysis comprises hydroxide and oxide of metals, hydroxide and oxide of alkaline-earth metals, aqueous solution, or carbide slurry. The biological preparation is prepared by cultivating chemoautotroph flora comprising Thiobacillus ferrooxidans and T. thiooxidans in 9k culture medium and adding 10-150 g iron sulfate heptahydrate (FeSO4.7H2O) in each liter, where culturing temperature is controlled within 20-40 degrees C and pH is 1.5-2.5, the ratio of bacterial liquid to iron salt, ferrous salt, and/or bacterial liquid of ferrous salt is 10-85 g:100 ml, the culturing temperature is controlled within 20-40 degrees C, aqueous solution (100-160 g/L) is obtained after the materials are stirred to react for 1-7 hours, and the iron and/or ferrous salts are iron dichloride, ferrous sulfate heptahydrate, ferric sulfate, polyferric sulfate, iron chloride, ferrous nitrate, iron acetate, ferric oxalate, ferrous perchlorate, and/or ferric thiosulfate; conducting solid-liquid separation; and drying the solid phase at 100-200 degrees C, to obtain the solid biological preparation.