Abstract: In response to the national straw returning policy, Heilongjiang introduced the Haineike 1700 corn stubble machine to process the straw returning to the field. Because it is an imported machine, it does not fully meet the local operating requirements. In order to make the Haineike 1700 corn stubble machine meet the local requirements, the operation needs to be improved and designed.According to the local actual operation requirements, the improved design of adding fixed knives and spring teeth was carried out. By analyzing the local operation requirements, UG three-dimensional modeling design was adopted to improve the components and the original machine was modified. The modified Haineike 1700 stubble cultivator showed in the field test that the qualified rate of stubble stubble after stubble operation reached 98%, which was 36% higher than the original machine, and the length of crushed straw was uniform, meeting national standards and Longzhen farm operation. need. The modified Haineike 1700 stubble cultivator can meet the requirements of local agricultural operations during operation, and the design and modification of its stubble cultivator has been demonstrated and new ideas are provided.