Intelligent anti-counterfeiting system

An intelligent anti-counterfeiting system comprises a marking device and an intelligent identification device. The marking device comprises a first housing, biosensors, a first coil assembly, a secondcoil assembly and electrodes. The intelligent identification device comprises a second housing, an electrode holder and a drive circuit board. According to the intelligent anti-counterfeiting system,an AC driving magnetic field coil and a DC bias magnetic field coil generate an alternating magnetic field and a DC bias magnetic field respectively, each of the biosensors has a natural frequency inthe magnetic field, and the natural frequency is used as an identification code. Since the identified liquid is unique under a number of factors, the identified liquid has a unique identification code. When the identified liquid changes in the factors such as volume, density, etc., the frequency of each of the biosensors changes under the driving of the intelligent identification device, i.e., the identification code also changes, so that it can be known that the detected liquid is a counterfeit product, and an intelligent anti-counterfeiting effect can be achieved.