Grain seedling raising device

The utility model discloses a grain seedling raising device which comprises water storage boxes, seedling raising trays and a seedling raising frame, the seedling raising frame is provided with a plurality of water storage boxes from top to bottom, the seedling raising trays are arranged in the water storage boxes, and the seedling raising frame is provided with a water inlet pipe and a plurality of balance water pipes; in every two adjacent water storage boxes, the water storage box located on the upper portion communicates with the water storage box located on the lower portion through the balance water pipe, and the top of the balance water pipe is higher than the bottom of the water storage box located on the upper portion by a preset distance; the water inlet pipe is communicated with the uppermost water storage box, and the lowermost water storage box is provided with an overflow port. According to the grain seedling raising device, water is supplied to the seedling raising plate through the multiple la