The invention discloses a multifunctional construction device for municipal pipe shafts. The multifunctional construction device comprises a top plate. Support rods are fixedly connected to the bottomof the top plate, wherein the support rods are distributed at four corners. A transverse plate is vertically connected between the support rods at the left side. A manhole cover opening device is arranged at the right side of the transverse plate. A lifting device is arranged below the top plate. The multifunctional construction device is provided with hooks and a first hydraulic cylinder, wherein the hooks are driven by screw rods; and therefore, manhole covers of different specifications can be conveniently, rapidly and efficiently opened and restored, good adaptability is achieved, manpower is saved, and operation efficiency is improved. The multifunctional construction device is provided with multiple hydraulic rods and a pedal plate, and therefore, personnel can move into and out ofa pipe shaft. The multifunctional construction device is provided with an excavation bucket, garbage and sludge which are difficult to pump can be cleared; clearing efficiency is high; and the multifunctional construction device can also be used for conveying operation tools, so that manpower is saved. The multifunctional construction device is simple in structure and diversified in function, andefficiency of relevant operation of the pipe shaft is greatly improved.