To solve the problems of poor collection effect and unstable profiling of existing machines and tools for strip straw cleaning, a combined strip straw cleaning scheme was proposed. The process of pulling straws with different tooth shape cleaning wheels was compared and analyzed from the mechanical point of view, and a radial sharpening-assisted pulling cleaning wheel was designed. The radius of the cleaning wheel was 162.5mm, the number of teeth was 12, and the tooth length was 65mm. The simulation experiment of the combined strip straw cleaning device was carried out. Taking the working parameters of the radial sharpening straw cleaning wheel as the experimental factors and the straw cleaning rate as the experimental index, the quadratic orthogonal rotation regression discrete element simulation experiment was carried out to analyze the changes in straw movement, soil disturbance, and straw cleaning rate during the working process of the straw cleaning wheel. The results showed the significant order of the experimental factors on the straw cleaning rate from large to small was as follows: roll angle, forward speed and rake angle. When the forward speed of the machine was 7.8km/h, the rake angle of the straw cleaning wheel was 31.7°, and the roll angle was 13.4°, the highest straw cleaning rate was 91.62%. A field experiment on the operational performance of the combined strip straw cleaning device and the whole machine was carried out. The results showed that the combined strip straw cleaning device worked stably, the straw cleaning rate was 87%~90%, and the design goal of the strip straw cleaning device was achieved.