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6.89%。This paper briefly describes the main structure, work principle and design of critical components of 2BYS—6 type paddy weeding-cultivating machine, and also analyzes the kinematical characteristics of the rotative weeding and the swing weeding. The experimental result of the machine in the field in which rice was transplanted by rice transplanter shows that the between rows average cleaning rate (relative cleaning rate) was 78.1%, the average cultivating depth was 4.39cm, the injury seedling rate was under 6.89%, and the other various performances came to the design requirements. 