Provided by the present disclosure is a bidirectional electrostatic discharge protection device which includes a first doped region, a second doped region, a third doped region, a first diode and a second diode. The first doped region has a first conductivity type, and the second doped region and the third doped region both have a second conductivity type. The first doped region has a ring structure outside the second doped region and the third doped region. A cathode of the first diode is coupled to the first doped region, and an anode of the first diode is coupled to a first port together with the second doped region. A cathode of the second diode is coupled to the first doped region, and an anode of the second diode is coupled to a second port together with the third doped region.