The invention provides a protective pipe plug device for building construction and a construction method of the protective pipe plug device.The protective pipe plug device comprises a shell and a body, the body is fixedly connected to the inner part of the shell, a clamping mechanism is installed at one end of the body, an outer limiting mechanism is arranged at one end of the shell, through holesare symmetrically formed in the body, and an air valve is fixedly connected to one end of the outer wall of the shell; a pressure gage is fixedly connected to the end, close to the air valve, of theshell, the air valve communicates with one end of the body through the corresponding through hole, sliding grooves are equidistantly formed in one end of the body, limiting claws are slidably connected to the inner walls of the sliding grooves, baffles are fixedly connected to one ends of the limiting claws, and springs sleeve the limiting claws; one ends of the springs are fixedly connected to one side surfaces of the baffles, and the other ends of the springs are fixedly connected to the inner walls of the sliding grooves; and a rotating shaft is rotatably connected to the middle part of thebody through a bearing, and the end, close to the sliding grooves, of the rotating shaft is fixedly connected with a petal wheel. The protective pipe plug device for building construction is simple in structure, convenient to install, stable in structure, more convenient and rapid to use, and high in practicability.