PURPOSE: Disclosed is a reduction method of sulfur oxides (SOx) from a sintering mill without construction of additionally desulfurization system. According to this method, after the urea solution is sprayed to coke used as a sintering raw material, the coke is mixed with iron ore. The content of urea in the coke is below 0.02 wt.%. CONSTITUTION: The spray method of urea solution into the coke is conducted as following: The urea is fed to subsidiary water bath (201) from the main water bath (2) which is used in order to increasing pseudo-pyrogenetic property of sintering raw material. The equipment for spraying urea solution is installed at the downstream line of hopper (103) of coke storage. The coke sprayed with urea compound is conveyed to a mixer. The mixed raw material is sintered to generate ammonia which reacts with sulfur species of coke and the produced sulfur salt, ammonium sulfate£(NH4)2SO4|. Since, the salt is easily removed by dust collector, the generated sulfur content of flue gas from sinteri