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In order to solve the problems of existing grapevine soil clearing machines in Xinjiang region, such as high injury rate and a large amount of soil over the color-striped cloth affects the grapevine soil clearing on the shelves and recovery of the color-striped cloth, a kind of brush roll grapevine soil clearing machine was designed by using a flexible brush. Its core component of the machine was the soil clearing device, which removed the soil above the color-striped cloth through the rotating motion of the soil clearing brush and the reciprocating motion of the transverse telescoping mechanism. Firstly, the structure and material of the soil clearing brush was designed, then the kinematic theory analysis of the working process of the soil clearing brush was analyzed, and the main parameters affecting the operating performance of the soil clearing brush was obtained. The reasonable range of rotation speed of soil clearing brush, reciprocating speed of transverse telescopic mechanism and clearing brush rotation diameter were determined by single-factor test, taking the rotation speed of soil clearing brush, reciprocating speed of transverse telescopic mechanism and clearing brush rotation diameter as the influencing factors, and taking the soil clearing rate and grapevine injury rate as the evaluation indexes, the three-factor and three-level orthogonal test was carried out. The test results showed that the order of significance of each factor on the soil clearing rate and grapevine injury rate was rotation speed of soil clearing brush, reciprocating speed of transverse telescoping mechanism and clearing brush rotation diameter. The optimal combination of parameters was the rotation speed of soil clearing brush of 250r/min, the reciprocating speed of the transverse telescoping mechanism of 0.14m/s and the clearing brush rotation diameter of 600mm, and the average value of three validation tests under this parameter combination, the soil clearing rate was 90.98% and the grapevine injury rate was 3.27%. The research result can provide reference for the mechanization technology of grapevine clearing in Xinjiang.