The invention relates to a two-electrode gas switch. The two-electrode gas switch comprises a first electrode base, a second electrode base, and two electrodes which are used for forming electrode gaps. The first electrode base is tubular. The electrode gaps are arranged in the internal cavity of the first electrode base. The radial side wall of the first electrode base is provided with a conductive connection structure which is used for enabling the first electrode base to be conductively connected with an external object. The conductive connection structure is arranged at one side, which is close to the second electrode base, of the electrode gaps in the axial direction of the first electrode base. The direction of current flowing through the radial side wall of the first electrode base is opposite to the direction of current flowing through the electrode gaps when current flows. The electromagnetic force generated by current flowing through the radial side wall of the first electrode base affects on the discharge arcs of the two electrode gaps to generate hooping constraint force on the discharge arcs of the two electrode gaps so that heat, the arcs and graphite particles are enabled to be concentrated, more graphite particles are enabled to be oxidized into gas, pollution of the graphite particles to insulating cylinders can be reduced and the service life of the switch can be prolonged.