Auxiliary device for rice harvester

The invention discloses an auxiliary device for a rice harvester, and relates to the field of rice agricultural machinery, the auxiliary device comprises a lifting assembly, a protective cover, a mixed soil crushing device, a driving device and a spraying device, a rolling assembly revolves, and a solution mixed with a decomposition agent can be sprayed to a mixing windmill; then the axial flow fan is used for guiding air with the rice hull powder into the air inlet pipe and blowing the air to the mixing windmill, the rice hull powder can be attached to the mixing windmill which is wetted in advance, dust raising is avoided, and compared with a traditional dust removal device arranged on the harvester, the harvester has the advantages that the machine does not need to be stopped for cleaning a dust removal bag, and the harvester can work continuously; the rolling assembly can shovel up and throw up soil through autorotation, blocky soil is refined and plastered, and a round plate on a middle shaft can cut up