The embodiment of the invention discloses a product verification method and device, belonging to the field of information security. The method comprises a step of reading the identification of a physical product, wherein the identification is stored in the information carrier in the physical product, a step of receiving a verification string inputted by a user, a step of verifying whether the verification string is matched with the identification or not through the server, and a step of determining the physical product is a genuine product according to a verification result. Through the server, whether the identification of a physical product is matched with the verification string is verified, whether the physical product is a genuine product is determined according to the verification result, the problem that the physical product is easily pirated and the anti-piracy ability of an existing production verification method is limited is solved, and the effect that even a malicious manufacturer steals the identification of the physical product and pirates the physical product, the user can distinguish whether the physical product is the genuine product through the mode of online verification is achieved.