[Problems] Disclosed is a surge absorber which can absorb a surge having a long wave tail, wherein a stable sparkover voltage is obtained without applying a discharging aid to electrodes. [Means for Solving the Problems] The surge absorber is comprised of a pair of terminal electrode members (2) which are opposed to each other; and the insulation tube (3) on which the pair of terminal electrode members (2) are disposed on opposite ends thereof and that has a discharge control gas sealed therein. Bulging electrode elements (4) having an expanded center portion (4a) are formed on the inner surfaces of the terminal electrode members (2). The bulging electrode elements (4) contain metal which can emit more electrons than the terminal electrode members (2).
