With the rapid development of Internet and RFID technology, the conductivity of RFID aerials becomes very essential. 9 types of carbon conductive ink are prepared with mixture of carbon black and graphite plus resin, and RFID tag aerials are screen printed based on four different aluminum-plated films. After being corroded in NaOH solution, the ink’s adhesion, the thickness of conductive ink layers and the aerials’resistivity are measured. Then, factors affecting the conductivity of RFID aerials are analyzed.