The invention discloses a high-concentration organic wastewater burning and purifying system which comprises a high-concentration organic wastewater supplying pipe with a residue filter, an organic wastewater storage liquid stirring container and a wastewater burning furnace body. The liquid outlet end of the high-concentration organic wastewater supplying pipe communicates with the liquid inlet end of the organic wastewater storage liquid stirring container. The wastewater burning furnace body is located over the wastewater storage liquid stirring container. The hard supplying pipe continuously supplies excessive combustion-supporting air, thus organic steam in gas subjected to water mist gasification is burned fully after encountering with flame in an circulation combustion cavity, carbon dioxide and water vapor are generated, and accordingly the burning and purifying effects on high-concentration organic wastewater are achieved.