The utility model discloses a municipal garden environmental protection auxiliary device that grows seedlings, cut up case, mixing box and fertilizer including earth and cut up the case, earth mincesthe center of case and locates to have cup jointed thick pivot through the bearing activity, thick pivot is provided with two sets ofly altogether, and the exterior wall of just two sets of thick pivots all is fixed with the chopping cutter that the equidistance distributes, and the terminal exterior wall in one side of just two sets of thick pivots is fixed with follows the driving wheel, followthe driving wheel setting in the electronic box, the exterior wall of case is cutd up in the electronic box setting at earth, exterior wall cover from the driving wheel has the belt, the other end andthe action wheel of belt are connected, the exterior wall at the power shaft is fixed to the action wheel, power shaft and motor fixed connection, this municipal garden environmental protection auxiliary device that grows seedlings carries out the intensive mixing with the earth and the fertilizer that needs of growing seedlings for fertilizer evenly distributed is in earth, and the nutrition that has improved earth can be satisfied the seedling to the demand of nutrient, and reduce external supply to the seedling nutrient, effectual resources are saved.