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A handy harvester for berry was designed, and equations of motion of harvesting device and branches were established. Through simplified and analysis equations, at last, fruit branches movement equation and harvest device horizontal movement equations were obtained. It could locate the best position of operating handle. Excitation frequency was slightly higher than the natural frequency in the harvesting operations. It had smaller vibration intensity on the appropriate excitation frequency, and chose the appropriate operating position which could reduce the operator’s labor intensity.