This invention relates to a paddy grain harvester and in particular, this invention relates to a paddy grain harvester which can separate grains and husk (also the remains part of crops) in different tanks during harvesting of crops into the fields. More particularly, this present invention relates to the a paddy grain harvester in which after cutting crops having griped with fan and chain coming into the conveyer belt and the crops reached into the mouth of thresher. Furthermore, this invention also relates to a paddy grain harvester which provides a more pleasant life, convenience, and stability. This invention also relates to a paddy grain harvester which has the beneficial effects of having high efficiency, saving manpower cost, reducing labor intensity, and having safety and reliability in production.