According to the planting mode of Chinese chives in small plots in the north and small areas in greenhou-ses,combined with the actual situation of Chinese chives production and the physical characteristics of Chinese chives,a small and medium-sized Chinese chives harvesting machine is designed,which is suitable for working in small plots such as greenhouses,gullies,terraces and field intercropping.The whole machine adopts a walking self-propelled structure,and is composed of components such as a grain-supporting device,a cutting device,a conveying device and a transmission device,and the structure design and parameters of key components are deter-mined.The finite element analysis software is used to analyze the frame and cutter structure,and the stress distribu-tion diagram and modal analysis diagram of each part are obtained.The results show that the maximum stress of the frame under the corresponding load is less than the allowable stress of the material,and the knife will not resonate during operation.Therefore,both the frame and the cutter structure meet the design strength requirements and stabil-ity requirements.