The invention relates to an organic waste gas treatment system with gas analyzing apparatuses. The system comprises a coating bath (1), a gas intake pipe (3), the gas analyzing apparatuses (4), a reaction device and an exhaust device. A gas collecting hood (2) is arranged over the coating bath (1) in a covering manner, one end of the gas intake pipe (3) is communicated with the gas collecting hood (2), the gas analyzing apparatus (4) is mounted on a pipeline of the gas intake pipe (3), the reaction device comprises a primary contact reaction tower (5) and a secondary contact reaction tower (7), the exhaust device comprises a gas outlet pipe (8), a fan (9), a high-altitude discharge pipe (12) and the gas analyzing apparatus (4), and the gas analyzing apparatus (4) is further mounted on the pipeline of the high-altitude discharge pipe (12). The system has the advantages that before-after analysis comparison on gas is performed through the gas analyzing apparatuses, meanwhile the advanced waste gas treatment technique of the photocatalytic oxidation process is adopted, organic waste gas is collected prior to being treated with the photocatalysis mechanism, and the treated gas conforms to national emission standards.