Building water supply and drainage pipeline supporting device

The invention relates to the technical field of constructional engineering, in particular to a building water supply and drainage pipeline supporting device which comprises a supporting assembly, an upper clamping assembly, a lower clamping assembly and a distance measuring assembly, the upper clamping assembly is arranged on the upper portion of the supporting assembly, and the lower clamping assembly is slidably connected to the middle of the upper end of the supporting assembly; the distance measuring assembly is slidably arranged at the end, close to the upper clamping assembly, of the supporting assembly, the lower clamping assembly comprises a first air cylinder and a second connecting block, a connecting piece is fixedly arranged at the end of a piston rod of the first air cylinder, a lead screw is vertically and rotatably arranged in the middle of the connecting piece, and the second connecting block is in threaded connection with the lead screw. A clamping hoop is arranged on the top of the upper cla