Foundation pit supporting device for house building construction

The utility model discloses a foundation pit supporting device for house building construction, relates to the technical field of foundation pits, and solves the problems that in the using process of an existing supporting device, the protection area of the existing supporting device cannot be adjusted according to the using requirements of workers, so that the existing supporting device cannot be suitable for foundation pits of different sizes, and the use cost is high. The device comprises a supporting shell and an adjustable fixing assembly installed on one side of the supporting shell, protection supporting plates are arranged in the supporting shell in pairs, the protection supporting plates are slidably connected with the inner wall of the supporting shell, and an adjusting mechanism is arranged in the supporting shell. The protection area of the device can be telescopically adjusted, the protection area of the device can be rapidly adjusted according to the use requirements of workers, the device can b