Water storage device applied to steel structure house

The utility model relates to a water storage device applied to a steel structure house. The water storage device comprises a house structure, a water storage pool deviating from the house structure, and a supporting flow guide structure arranged below the house structure. The supporting flow guide structure comprises a rear supporting base table, a front supporting base table and a flow guide plate obliquely arranged between the rear supporting base table and the front supporting base table. The height of the side, deviating from the rear supporting base table, of the flow guide plate is smaller than the height of the side, deviating from the front supporting base table, of the flow guide plate, and a drainage hole communicating with the interior of the reservoir is formed in the rear supporting base table. The water storage device is mainly used for achieving water storage in the surrounding environment of the steel structure house, the problem that too much water is accumulated on the ground can be avoided,