The present invention provides an intelligent card state detection method and system. After the voltage signals of the intelligent card inserts a card groove are obtained, the voltage signals are converted to digital signals, the digital signals are stored in the register of the intelligent card; a central processor obtains the digital signals in the register, and the type of the intelligent card in the card groove is identified according to the digital signals; and the work voltage of each intelligent card is detected according to the type of the identified intelligent card, and the communication state of the corresponding intelligent card is returned back according to the work voltage. The intelligent card state detection method and system can reduce the arrangement of the card detection port and automatically perform detection of the state of each intelligent card on the mobile terminal in order so as to improve the card state detection intelligence and prompt the development of the intelligent mobile terminal technology.