The invention provides a planting device. The planting device comprises a laying layer and a planting body; the planting body comprises a frame, a plurality of first partition plates parallel to one another and a plurality of second partition plates parallel to one another; the frame divides internal space enclosed by the frame into a plurality of planting areas; the frame and the partition platesare provided with gaps respectively, so that any one side wall of any one planting area is provided with at least one gap; an opening of each gap is located on the lower edge; any one first partitionplate intersects with each second partition plate, so that a supporting column is formed on the intersection position; the height of the frame is equal to those of the partition plates, and the frameis flush with the upper edges of the partition plates; the upper surface of the laying layer can be in contact with the lower surface of the planting body when the planting body is located above thelaying layer. Nutrient soil placed in the planting areas can retain water, and the formed gaps can support the mutual infiltration of water between the adjacent planting areas, therefore, the plantingdevice can improve the utilization rate of water resources.