Hydroponic vegetable seedling raising device

The utility model provides a hydroponic vegetable seedling raising device which comprises a first L-shaped plate, the left side and the right side of the first L-shaped plate are each provided with a side plate, a first cultivation box is arranged at the top of the front face of the first L-shaped plate, two second L-shaped plates are arranged at the bottom of the front face of the first L-shaped plate, and the tops of the two second L-shaped plates are both rotationally connected with first threaded rods. A second cultivation box and a third cultivation box are connected between the two first threaded rods, and first lifting assemblies matched with the second cultivation box are arranged on the two second L-shaped plates. The beneficial effects are that through the arrangement of the first lifting assemblies and the second lifting assemblies, the distances among the first cultivation box, the second cultivation box and the third cultivation box can be adjusted; according to the device, when different vegetab