The invention relates to a device for reducing antimony content in the chemical industry and particularly relates to a method and device for reducing antimony content with industrial phosphoric acid. The method for reducing antimony content with industrial phosphoric acid comprises the following steps: keeping 2-3 hours of full reaction between industrial hot-process crude phosphoric acid and an antimony removal agent in a ratio of 80:(1-3) at 70-80 DEG C; filtering once with double-layer filter cloth; blowing in pure air and degassing the phosphoric acid filtrate for 5-6 hours; and adding pure water to obtain high-purity phosphoric acid. The device for reducing antimony content with industrial phosphoric acid comprises an industrial phosphoric acid tank (1), an antimony removal agent tank (2), a reaction kettle (3), an overflow tank (4), a filter A (5), a filter B (6), a filter C (7), an intermediate tank (8), a vacuum pump (9), a finished product tank (10), an air compressor (11) and a pure water tank (12). According to the method and device provided by the invention, without other impurities, sufficient and uniform mixing of the antimony-free phosphoric acid and antimony removal agent as well as the quality of the finished product are guaranteed, the measurement is accurate, and the equipment is reduced.