The machine for rice and wheat crops field plots and original material reproduction dedicated threshing cleaning machine, in the threshing and cleaning the process and for field experiment provide accurate data and the purity of the super elite and parent materials, good operation quality, high efficiency, safe and comfortable. This machine is to ensure that the mixed from clean, less broken, less loss, seed cleaning degree is high, easy cleaning machine, safe operation, simple and durable and other significant features for agricultural units at all levels, seed farm and agricultural seeds specialist.