4LZ-1.2B small rice and wheat combine harvester is a new generation whole-feeding grain harvester, it is thoughtfully researched and developed by our company aiming to help farmers who run small to average scale of flat, mountainous, riverside farmlands. Our reliable combine harvesters support as many farmers as possible, it is good harvesting rice selection and good for versatile use. The rice combine harvester (RCH) is a mobile rice harvesting machine that combines harvesting, threshing, cleaning and bagging in one operation. It is climate change resilient and suitable for local conditions and for major rice producing areas, and at the same time also requires less labor and can ensure lower postharvest losses compared to manual harvesting. The machine working theory is: the rotary reel tooth grab the crops into the header, the upper knifes cut off the grain part and convey to the threshing cabin for threshing, sifting, cleaning and separating, and finally complete harvesting. The machine is compact structure with small volume, nice appearance, easy operation, high flexibility, high reliability and lower cost, etc. The machine is well performed in air-clean with fan winnowing equipped. The cutting device is consisted of upper and lower cuter, the upper knife for the rice, lower knife (optional) to cut stubble. This machine manipulated comfortably and conveniently as we widely introduced farm auto and tractor technologies with turning, gear, electronic system, hydraulic structure. Small size, light weight, easy operation enabled the machine to be worked on patch fields of plains, hills and terraces. Mainly used to harvest rice/wheat with a height of 500mm-1300mm, Suitable for yield of 3750kg-10500kg per hm2, paddy field muddy depth≤250mm.