The utility model relates to a steam generator, in particular to a steam integrated device for a range hood. The steam integrated device for the range hood comprises a shell, wherein a water pump is arranged in the shell and is connected with the steam generator through a pipe; the steam generator comprises a water inlet, a heating pipe, a steam outlet; the water inlet and the steam outlet are formed in the surface of the shell; the heating pipe and the shell are integrally formed, a cavity is formed between the heating pipe and the shell, and the whole cavity is long and straight; the water inlet and the steam outlet are respectively formed in two ends of the cavity; the heating pipe is U-shaped. According to the steam integrated device for the range hood, the internal space of the range hood is saved by maximizing structural design. Compared with a conventional steam cleaning system for the range hood, the steam integrated device for the range hood has the advantages that on one hand, the space is saved, and the device is optimally utilized; on the other hand, the device integrates the water absorption function and the steam generation function and has the anti-vibrating effect, and the heat dissipation direction of the device is optimized through the internal structural design.