The invention relates to a peanut combine harvester, comprising a power travelling mechanism, an excavating mechanism, a gripping conveying mechanism, a fruit-picking mechanism, a cleaning mechanism and a cross conveying elevating and storing mechanism, wherein, the front of the power travelling mechanism is provided with the excavating mechanism connected with the gripping conveying mechanism; the fruit-picking mechanism is positioned at the back part of the gripping conveying mechanism, the lower part of the fruit-picking mechanism is provided with the washing mechanism and one side thereof is provided with the elevating and storing mechanism; power input shafts of the gripping conveying mechanism, the fruit-picking mechanism and the washing mechanism are connected with the output power of the power travelling mechanism by power transmission device. The peanut combine harvester of the invention integrates excavation, conveying, soil-removing, fruit-picking, separation, cleaning and storing into a whole, a machine frame receives pressure evenly, a mulching film is not damaged, the soil pollution is avoided, the operation resistance is little, and the operation is smooth; besides, the peanut combine harvester is characterized by compact mechanism, low cost, low consumption, little harvesting loss and high efficiency.