Fuente: WIPO "tobacco agriculture" The utility model discloses a hydroponic fixing device which comprises a hydroponic tank. Fixing plates are arranged on the opposite side walls of the hydroponic tank, through holes are evenly formed in the fixing plates, and U-shaped rods are placed in the through holes of the fixing plates; a horizontal rod is arranged at the horizontal position of the U-shaped rod, a first clamping groove is formed in the horizontal rod, a movable rod is arranged on the first clamping groove, the movable rod is arranged to be in a T shape, a first arc-shaped plate is arranged at the vertical position of the movable rod, a connecting rod is arranged on the first arc-shaped plate, a second clamping groove is formed in the connecting rod, and a driving rod is arranged on the second clamping groove. The tobacco plants can be fixed conveniently, and growth of the tobacco plants is facilitated.