The utility model discloses a kind of granular chemical product bagged's flattening mechanism, it is related to chemical product production packaging equipment technical field, including conveyer, the upper of conveyer is provided with flattening mechanism, the flattening mechanism includes support frame, multiple groups equidistance arrangement's first elastic member, multiple mounting frames, the upper surface of support frame is equipped with multiple groups equidistance arrangement's guide hole.The utility model design structure is reasonable, it can be through guide rod, the cooperation of first elastic member and rotating roller, utilize the flattening force of first elastic member's elasticity self-adapting adjustment rotating roller to packaging bag;When granule is accumulated thicker in packaging bag, first elastic member compression amount increases, flattening force is strengthened in turn, avoid granule compaction deficiency;When granule distribution is thinner, elastic member rebound reduces pressure, prevent excessive compaction and lead to packaging bag deformation or granule breakage, effectively solve the problem of "convenientness of adjusting flattening force" of existing fixed structure mechanism, adapt to the bagged demand of different filling capacity.