An ignition plug includes a main metal fitting; an earth electrode having one end fixed to the main metal fitting and including, in a part of the other end, an inclined portion inclined toward the center axis line of the main metal fitting; an earth electrode-side chip joined to the inclined portion; and a center electrode having one end exposed from the main metal fitting. The ignition plug includes: a pedestal which has an elliptic cylindrical shape, is disposed so as to have a minor axis directed toward the earth electrode-side chip, and has an end surface forming an inclined surface inclined along the minor axis with respect to the center axis line; and a center electrode-side chip laser-welded to the inclined surface. The earth electrode-side chip and the center electrode-side chip face each other.