Abstract: An electronic device and a glass sealing method used therefor, with which a sufficient joint strength can be acquired only with the use of a glass sealing material without using an activated brazing material is provided. A crystal device includes an element loading member, lid member, a crystal vibration element, and a glass sealing material. The glass sealing material is provided in a ring-like form between the fringe of the lid member on a main surface side and the fringe of the element loading member on a main surface side, and keeps a space in vacuum.