Abstract: In order to solve the problem of high broken pods caused by the jam of seedlings in the process of spiral feeding and lifting transportation of peanut picking combine harvester, a feeding and conveying device of peanut picking combine harvester was designed. Through the analysis of plant feeding and transportation process of dynamics and kinematics, the interaction relationship between peanut plants with agitator conveyor, peanut plants with chain target lifting device was studied. Through theoretical analysis and calculation, the structure and motion parameters of the key components of feeding and transportation were determined, and the integrated research was carried out. The peanut plants which were naturally dried for 3～5 days in the field were used as materials, and the conveying rate and pod breakage rate were used as test indexes. The bench test was carried out with the feeding amount, feeding stirrer speed and feeding inlet conveying gap as test factors. The test results showed that when the feeding amount was 3 kg/s, the feeding stirrer speed was 150 r/min, and the feeding inlet conveying gap was 90 mm, the operation performance reached the optimum: the conveying rate was 99.83%, the pod breakage rate was 0.28%, the conveying process was stable and reliable, and there was no blockage, which met the operation requirements of peanut combine harvester.