Abstract: In order to resolve engineering practice problems such as cotton picker ingots were easily worn and broken during picking process, under these circumstances, the model of picking systems was built for one- degree-of-freedom dry friction oscillation according to its structural feature and oscillation behavior. Dynamic response of ingots during picking process with friction force was investigated, and the stick-slip vibration of system motion was analyzed. Thus, the actual dynamics characteristic during picking process was summarized by changing speed and structural parameter of ingot. As well, the suggestion was given to decrease the wear degree of cotton picker ingots by studying on the effects of dynamic behavior on ingot wear. The theoretical analysis and numerical results are applicable to the structural design and optimization of cotton picker ingots.