Blueberry planting and cultivating device

The blueberry planting and cultivating device comprises a planting and cultivating box and a water supply mechanism, the planting and cultivating box comprises a box body, the side edge of the bottom of the box body extends downwards to form a supporting part, and the bottom of the box body on the inner side of the supporting part is provided with a plurality of annular steps with the radial sizes sequentially reduced from the outer side of the bottom of the box body to the center. The step heights of the multiple stages of annular steps are sequentially increased from the outer side of the bottom of the box body to the center when viewed from the bottom of the box body to the top of the box body, and a plurality of ventilation and drainage holes communicating with the interior of the box body are formed in the step face of each stage of annular step at intervals; water distribution pipe connectors are connected to the water supply main pipes located on the two opposite sides of the box body, water distributi