A way of expelling straw sideways was adopted by the 2BMFJ type notill precision planter. The planter was able to complete seedbed preparing, precision seeding, fertilization, covering, rolling, pesticide spraying, straw mulching equably and so on. The planter has become an important technical mean to achieve conversation tillage. Cleaning device of the 2BMFJ type notill precision planter mainly completes preparing seedbed. However, there are some problems such as severe vibration, more power consuming and lower working speed on the cleaning device. So the optimization experiment was carried out. Wheat stubble fields were regarded as experiment objects. Orthogonal experiment with four factors and three levels was employed to find the optimal combination of the structure and working parameters for the cleaning device. The number of cutters per disk, cutter disks configuration, working speed and cutter disk speed were selected as factors. Passability, equivalent power dissipation, equivalent fuel consumption rate and vibration intensity were selected as indexes. The optimal combination of influencing factors was obtained by the experiment: the number of cutters per disk was 4, cutter disks configuration was 3-2-3, working speed was 5.4km/h and cutter disk speed was 300r/min. Under this condition, 〖JP2〗the cleaning device wasn’t blocked; the vibration intensity was decreased from 197m/s2 to 134.48m/s2, by 31.74%; the equivalent power dissipation was decreased from 5.88kW to 4.58kW, by 21.11%; and operation speed was increased from 4.5km/h to 5.4km/h, by 20%. The results can provide reference for the optimal design of the 2BMFJ type no-till precision planter.