Abstract: The overall structure, working principle, technical features, structural and working parameter designs of key components of 4H-800 peanut harvester were introduced. The facility was made up primarily of digging shovel, one-sided vertical cutter, vibration sieve, assembly of driving vibrating, walking wheels, power transmission assembly, rack and so on. It can be applied with a 11～13.2 kW tractor, and can accomplish harvesting two-row peanut at one time. Experiment evaluation and application demonstration showed that the harvester had the characteristics of operating smoothly and reliably, high rate of soil removal, low rate of losing and so on, and its net productivity reached 0.1 hm2/h, the total loss rate was 1.5%, breakage rate was 0.1%, soil containing rate was 7.5%, and all indexes were better than those of industry and local standards.