The invention discloses an electric intelligent phonetic system which comprises a microprocessor, an I/O expansion interface circuit, a data memory, a display screen, a key circuit, an RFID recognizing circuit, a voice synthesis circuit and a USB interface, wherein the I/O expansion interface circuit is connected with the data memory, the display screen, the key circuit and the microprocessor respectively; the microprocessor is connected with the RFID recognizing circuit, the voice synthesis circuit and the USB interface respectively; the voice synthesis circuit is successively connected with a lowpass filtering circuit, a voice frequency amplifying circuit and a horn; a single chip AT89C51 is served as the microprocessor. The electric intelligent phonetic system disclosed by the invention is combined with an RFID recognizing technique and a voice synthesis technique; a voice guider for automatically identifying narrated objects is provided; a storage technique is combined for realizing the timely updating of guidance information; besides, an interphone voice frequency amplifying circuit designed in the manner of a plurality of triodes matched with a resistor-capacitor unit is adopted; compared with the amplifying circuit designed with an operational amplifier, the interphone voice frequency amplifying circuit has the advantages of low loss and high stability.