The invention discloses an ultrasonic wave anti-fake device and method. The device comprises an anti-fake module and a verification module, the anti-fake module and an object needing anti-fake processing are packaged together, and the anti-fake module comprises a first acoustic wave receiver, a first acoustic wave generator and a first processing unit, wherein the first acoustic wave receiver is used for monitoring external pairing ultrasonic wave signals, the first acoustic wave generator is used for transmitting encryption signals containing object information, and the first processing unit is used for analyzing and processing the pairing ultrasonic wave signals and generating the encryption signals. The verification module comprises a second acoustic wave generator, a second acoustic wave receiver, a second processing unit and a displaying unit, wherein the second acoustic wave generator is used for generating pairing ultrasonic wave signals, the second acoustic wave receiver is used for receiving encryption signals, the second processing unit is used for generating pairing ultrasonic wave signals and decrypting the encryption signals, and the displaying unit is used for displaying the object information obtained through decrypting the encryption signals. When the information of the object needing anti-fake processing needs to be inquired, the verification module generates the pairing ultrasonic wave signals, the anti-fake module generates the encryption signals when monitoring that the pairing ultrasonic wave signals are matched with stored secrete keys, and the verification module receives and decrypts the encryption signals according to a conventional algorithm and displays the decrypted information on the displaying unit.