The invention discloses a multifunctional anti-theft door, which comprises a door plate, an observation hole, a multifunctional anti-theft lock, a door handle, a door frame and a hinge, wherein the right end of the door plate is evenly and equidistantly provided with three hinges, and is fastened to the door frame through the hinge; the observation hole is circular structure and is arranged in theupper end of the middle part of the door plate in embedding mode. When the multifunctional anti-theft lock drives the door handle to be reset and closed, a driving wheel is arranged to synchronouslyrotate a main transmission mechanism; a linkage mechanism is respectively engaged through a second transmission mechanism to push a sealing mechanism outward, and effective sealing is carried out through a sealing strip; when the door handle is rotated at the time of opening the door, the sealing mechanism is automatically stored by a resetting device to avoid friction with a bottom plate; the multifunctional anti-theft door has a certain self-protection function, the problem that the door gap is too large can be effectively solved, the sound insulation capability is improved, and the safety is improved, so that a bad man who wants to carry out theft can do nothing.