Abstract: An efficient ID-based partially blind signature scheme is proposed based on gap diffie-hellman group.In this scheme，the dishonest Private Key Generator（PKG） can not impersonate any user at any time.Then a new ID-based threshold partially blind signature scheme is proposed based on the ID-based partially blind signature scheme.The main idea of the scheme is based on Feldman’s verifiable secret sharing scheme which is simple to implement with high secure character.Up to now，it is the first pairing-based cryptography on ID-based threshold partially blind signature.Analysis shows that the proposed scheme is secure and effective.It has provable security properties of blindness，unforgeability and robustness.