Fecha de publicación: 10/12/2021 Fuente: Wipo "precision agriculture" The utility model discloses a high-precision agricultural machinery tail gas detection device in the field of agricultural machinery, which comprises a reaction box, a plurality of filter pipes and a tail gas detector, the filter pipes are arranged at the front end of the top of the reaction box, the tail gas detector is arranged at the front end of the reaction box, reaction liquid is arranged in the reaction box, and the bottom ends of the filter pipes penetrate through the reaction box and extend into the reaction box. The bottom ends of the filter pipes extend into reaction liquid, filter elements are arranged in the multiple filter pipes, the rear ends of the tail gas detectors are communicated with the filter pipes, detected tail gas is filtered through the filter elements in the filter pipes, large-particle dust in the tail gas is filtered, the filter pipes are designed to be bent, the tail gas filtering time is prolonged, and the tail gas filtering efficiency is improved. The efficiency of treating dust particles in waste gas is improved; the tail gas after dust filtering is introduced into the reaction liquid in the reaction box, the reaction liquid reacts with harmful gas in the tail gas, the harmful gas in the tail gas is treated, and the harmful gas in the tail gas is prevented from being released to harm the environment.