Abstract: A device for cultivating bean sprouts comprises at least one cultivating container, a bubble generating pump, a control unit which controls the bubble generating pump, a timer, an electric heater, and a temperature sensor. Also, the device further comprises a U-shaped tube for supplying the water in a water reservoir tank to a water-ascending pipe which is disposed in the center of the cultivating container. An air conduit injects air bubbles into the water ascending pipe which terminates in a T-shaped rotable injection pipe disposed at the top end of the of the water-ascending pipe. Spaced-apart sieve plates are disposed on the top and the bottom of the cultivating container for housing and treating the beam sprouts which can be automatically irrigated.