Abstract: By using restrictive blind signature and zero knowledge proofs of knowledge, a new proxy signature scheme with proxy signer privacy protection is proposed, which has two characteristics listed as follows: （1）Being encrypted by ElGamal encryption, the ID information of the proxy signer is included in the proxy signature, so no one, except the revoker, can find the identity of the proxy signer, while with the help of the revoker, the identity of the proxy signer can be revealed; （2）By using the zero knowledge proofs of knowledge, only the legitimate proxy signer can give a proxy signature on behalf of the original signer Meanwhile, since the security of the proposed scheme is based on the restrictive blind signature hypothesis and the random oracle model, the revoker can not make a cheat and only when the proxy signer follows the scheme, he can get the power of attorney At the same time, it is proved that it satisfies the security requirements such as verifiability, strong unforgeability, strong non repudiation, proxy privacy, and privacy revocation