Method for manufacturing surge absorption device

Disclosed is a method for manufacturing a surge absorption device. In order to manufacture a surge absorption device, a plating layer may be formed on the end surface of a ceramic tube through which the internal through-space is exposed, and a sealing electrode may be attached to the plating layer using a brazing ring thereafter. At this time, the plating layer may be formed as follows: forming an electroless plating catalyst layer after etching the end face of the ceramic tube; forming a metal layer on the end face of the ceramic tube according to electroless plating; and heat-treating the metal layer thereafter.