To provide a method of fabricating a piezoelectric vibrator capable of excellently bonding a lead terminal and a piezoelectric vibrating piece despite being small-sized for ensuring an accuracy of a frequency and various properties and reliability of the piezoelectric vibrator, there is provided a method of fabricating a piezoelectric vibrator including an airtight terminal having a lead terminal and a piezoelectric vibrating piece comprising a piezoelectric member and formed with an exciting electrode and a mount electrode at a surface thereof, in which an inner lead of the lead terminal and the mount electrode are bonded, wherein when the inner lead and the mount electrode are bonded, a plasma arc is discharged to a portion of bonding the inner lead and the mount electrode in argon gas to bond the inner lead and the mount electrode by a solder, thereby, a controlled heat amount is locally supplied and therefore, solid bonding can be carried out and the piezoelectric vibrator having high reliability can be provided.