The invention discloses a deodorizing device for high-temperature odor gas from a reaction kettle. The deodorizing device comprises the reaction kettle, a condensing pipe and a deodorizing tank, wherein an opening is formed in the reaction kettle and is communicated with the condensing pipe; the deodorizing tank comprises a water spraying tank and an adsorption tank; a gas inlet is formed in the upper part of the side surface of the water spraying tank; the gas inlet is communicated with the condensing pipe; the water spraying tank and the adsorption tank form an integral structure; the waterspraying tank and the adsorption tank are separated by a separating plate; the water spraying tank is communicated with the adsorption tank through a communicating port in the bottom of the separatingplate; a sprinkling device is mounted on the top of the water spraying tank; the sprinkling device comprises a sprinkler and a water inlet pipe; a water inlet of the water inlet pipe is formed outside the water spraying tank; grooves are formed in the water spraying tank and in the two sides of the water inlet pipe; and ice boxes are placed in the grooves. The deodorizing device performs triple treatment to the gas from the reaction kettle, namely condensation, water dissolution and adsorptive deodorization, is applicable to deodorization of the high-temperature odor gas, and can achieve a very good deodorizing effect.