Rice seed germination cultivation device

The utility model belongs to the technical field of seedling raising devices, and discloses a rice seed germination cultivation device which comprises a cultivation box and an auxiliary mechanism, cultivation lattices are movably arranged in the cultivation box, structural boxes are fixedly connected to the two sides of the cultivation box respectively, and the auxiliary mechanism is arranged in the structural boxes; the auxiliary mechanism comprises a supporting grid, fixing frames, a screw rod, a first bevel gear, a second bevel gear, a rotating rod, a handle, a belt wheel, a belt, a connecting block and a connecting rod, the supporting grid is arranged at the top of the cultivation box and corresponds to the cultivation grid, and the fixing frames are fixedly connected to the two sides of the cultivation box respectively. The problems that an existing seedling raising device can incline or turn over along with the growth height of seedlings, but an existing auxiliary support cannot assist in supporting the