The invention provides a vibration noise suppression device for a single-phase shaded-pole motor. The vibration noise suppression device comprises a cover body, a frame-shaped air pipe, a primary noise reduction air pipe, a secondary noise reduction air pipe, shielding plates, an insertion rod, an air guide auger, a bottom supporting plate, a top supporting plate, a suction fan and a motor. The whole cover body is rectangular, the front end of the cover body is open, the motor is sleeved and covered with the cover body in a sliding mode, and four rectangular open grooves covered with metal filter screens are formed in the side wall of the rear end of the cover body in an X-shaped penetrating mode. A semicircular groove is formed in the middle of the inner side of each of the two shieldingplates in a penetrating manner, the two shielding plates are correspondingly mounted on the left and right sides of the opening in the front end of the cover body in a sliding manner, and the two shielding plates are oppositely tightened through an upper pressing lock catch and a lower pressing lock catch to form a complete square cover plate. The two shielding plates are tightened together through the two pressing lock catches, and disassembly is convenient. Two rows of positioning columns can block and fix the two shielding plates in an inserted mode, so that the two shielding plates are prevented from moving relative to the opening in the front end of the cover body.