The invention discloses a device for recovering iodine from dilute phosphoric acid in phosphoric acid production with a wet method, comprising a pipeline (1) for leading in the dilute phosphoric acid;the pipeline (1) is connected with an oxidation tank (3), the oxidation tank (3) is connected to a shower (4) above an extracting tower (2) by the pipeline, the lower part of the extracting tower (2)is connected with a blast blower (10), an air outlet (5) of the extracting tower (2) is connected with a packing absorbing column (6), an absorption liquid pipeline (7) of the packing absorbing column (6) is connected with a receiving tank (8) which is connected with an iodine separating tank (9). Proved by a series of industrial tests and researches conducted by the applicant in a phosphorus chemical factory, the device of the invention can realize mass industrial production for extracting iodine, and the device is obtained by optimization through a plurality of tests.