The invention discloses a deodorization device suitable for treating odor with complex components. The deodorization device comprises a photolytic deodorization module, a biological deodorization module, a washing deodorization module, a first gas online monitoring feedback module, a second gas online monitoring feedback module and an intelligent electric control module, wherein the photolytic deodorization module, the biological deodorization module and the washing deodorization module are connected in series and communicated with one another; the first gas online monitoring feedback module is arranged at an inlet of the photolytic deodorization module; the second gas online monitoring feedback module is arranged at an outlet of the washing deodorization module; the intelligent electric control module controls the air speed of the photolytic deodorization module, the biological deodorization module and the washing deodorization module according to received signals sent by the first gas online monitoring feedback module and the second gas online monitoring feedback module. The deodorization device is suitable for treating the odor with complex components and adaptive to fluctuations of odor concentrations in different seasons and weather; the deodorization rate can reach 99.9-99.998% which is far higher than that of existing single deodorization equipment; the deodorization rate reaching the standard on the worst meteorological condition can be guaranteed, seven deodorization production processes with different combinations can be switched intelligently, and the deodorization device is small in occupied area and low in chemical consumption and energy consumption.