Abstract: A security certification method for hiding an ultra-high frequency electronic tag identifier. By encrypting the electronic tag identifier (TID) using a random number, and returning it in the cipher text, this certification method can effectively avoid an illegal reading/writing device from acquiring the TID information and from performing illegal tracking and identity recognition on an object identified by the electronic tag. Meanwhile, this certification method can effectively resist attacks, such as eavesdropping, counterfeiting, replaying, and etc. It has the advantages of preventing the electronic tag information from being eavesdropped and counterfeited, and etc. The security certification method uses the symmetric encryption algorithm of the national commercial cryptographic algorithm and the dual-key and the two-step certification mechanism.