The invention discloses a threading device for building threading pipe construction, which is characterized in that it includes a fixed base, a fixing piece, a hinge piece, a connecting rod, a moving rod, a return spring, a connecting piece, a clamping plate, an electric wire, a rotating shaft, a rotating ring, A connecting shaft, a fixed clip, a rotating handle, a fixed nut and a threading pipe, the connecting rod is hinged on the hinge, the moving rod is hinged on the connecting rod, and one end of the return spring is arranged on the connecting rod. The other end of the return spring is set on the moving rod, the clamping plate is set on the connector, the rotating shaft is set on the fixed base and inside the fixed base, and the rotating ring is slidably connected to the fixed base. The connecting shaft is hingedly arranged on the rotating ring and arranged in the fixed base, and the fixed clip is hingedly arranged on the rotating shaft and arranged on the connecting shaft. The invention belongs to the technical field of building construction, in particular to a threading device for building threading pipe construction with good practicability and low cost.