The 3080 combine harvester is a kind of rice harvesting machine developed on the basis of the 3070 harvester by John Deere Jialian. It has the advantages of small volume, flexibility, advanced performance, high harvesting efficiency, multi-purpose machine, etc. The advantages, through the improvement of feeding system, cleaning system and power system, effectively improve the harvesting efficiency, reduce the loss of cleaning, and enhance the product's adaptability. The test data show that the 3080 harvester is superior to the national standard in the working conditions of large feed volume, and meets the requirements for excellent products of the grain combine harvester. The model is based on harvesting rice and wheat, and can also harvest soybeans, rapeseeds, grass seeds and other crops with corresponding functional components. The feed volume can reach 3.5 kilograms per second, which is 0.5 to 1.5 kilograms higher than similar models. In the same model in China, it has the highest harvest efficiency and is in a leading position.