The utility model discloses combined gas purification equipment. The purification equipment comprises an oxygen ion generator, a gas collecting body, an integrated deodorization device, a tail end processor and an exhaust device which are sequentially communicated, a gas outlet of the oxygen ion generator is communicated with a gas inlet of the gas collecting body through a fan; wherein a gas outlet of the gas collecting body is communicated with a gas inlet of the integrated deodorization device, a gas outlet of the integrated deodorization device is communicated with a gas inlet of the tailend treatment device, and a gas outlet of the tail end treatment device is communicated with the exhaust device through a fan; according to the purification equipment disclosed by the utility model, aplurality of gas purification processes such as the integrated deodorization device, the tail end processor and the chimney are combined together, foul toxic and harmful gases are subjected to multi-level treatment, and foul ions, harmful pollutants and the like can be efficiently removed.