The invention discloses a multifunctional unpacking and tearing integrated machine. The multifunctional unpacking and tearing integrated machine comprises a frame, wherein a feed inlet is formed on the top of the frame, a discharge hole is formed on the bottom of the frame, a rotor which is driven by a motor to rotate is arranged in the frame, a plurality of moving blades are axially and spirally arranged at intervals on the outer circumferential wall of the rotor, an overturning rack is hinged to the frame on one side of the rotor, a stationary blade cover plate is arranged on the overturning rack, a plurality of stationary blades are arranged on the stationary blade cover plate, and the overturning rack which is driven by a self-locking hydraulic cylinder arranged on the rack overturns up and down to synchronously drive the stationary blades on the stationary blade cover plate to be close to or be separated from the moving blades on the rotor, so that the moving blades on the rotor and the stationary blades on the stationary blade cover plate can match with each other to cut and tear or reverse and unpack materials. The multifunctional unpacking and tearing integrated machine disclosed by the invention has the advantages that (1) by adjusting the relative positions of the stationary blades and the moving blades, the multifunctional unpacking and tearing integrated machine not only can realize a tearing effect, but also can realize an unpacking effect and is multipurpose, and the application range of the equipment is expanded; and (2) the stationary blades are quite conveniently disassembled and replaced, so that the work efficiency is greatly improved.