The invention discloses a threshold type memristor circuit simulator. Two ends of the simulator pass through a voltage follower consisting of an operational amplifier for isolating a backside circuit,the two paths of voltage are output through a differential circuit; the acquisition of the terminal voltage of the memristor circuit model is realized; wherein an output signal of the differential circuit is input into a threshold circuit formed by reversely connecting two diodes in parallel, the differential circuit, the threshold circuit and the anti-phase proportional circuit jointly form thethreshold circuit with an adjusting function, and threshold adjustment can be realized by changing the proportional resistance of the differential circuit and the anti-phase proportional circuit. Thevoltage signal of which the amplitude exceeds the threshold circuit enters the inverting integrating circuit and the summing circuit to output a voltage signal which is proportional to the memristivevalue; the signal and an output signal of the differential circuit can output a voltage signal in direct proportion to a current flowing through the memristor after passing through the multiplier, andfinally, the voltage signal is converted into a current signal by adopting two current transmitters, and meanwhile, the currents at the two ends of the memristor are ensured to be equal.