The present invention discloses a connection structure of an armature portion and a pedestal of a magnetic latching relay. The connection structure comprises an armature portion and a pedestal; the armature portion is provided with a rotating shaft, and the pedestal is provided with a shaft hole, wherein the shaft hole is provided with an opening part; the height of the opening part is smaller than the height between the upper top wall and the lower bottom wall of the pedestal; and when the rotating shaft of the armature portion is disposed in the shaft hole of the pedestal along with the opening part, the rotating shaft is provided with an abdicating part at the height direction to allow the rotating shaft to be in microscale interference fit with the opening part after the abdicating part is reduced, and when the rotating shaft rotates to a resetting stabilization position or a setting stabilization position, the magnitude of interference of the rotating shaft is gradually increased up to the maximum between the height direction and the opening part, so that the rotating shaft is prevented from quitting from the shaft hole. According to the invention, it is ensured that the rotating shaft of the armature portion is not easy to take off after being installed into the hole of a pedestal, so that the reliability of products is improved, and plastic soft flocks generated in the process of installing the rotating shaft of the armature portion into the hole of the pedestal are small, so that the stability of relay parameters is ensured.