PURPOSE: To provide airtight terminal structure which an airtight terminal having a metal base being hard to be molded in one body can be accurately and efficiently manufactured.

CONSTITUTION: A metal base is divided into a bottom base 13 and one or more upper part frame-like rings 14, and at the same time a clad metal layer 141 which can be melted and connected by heating is laminated on the bottom base side of the frame-like rings, and the bottom base and one or more upper part frame-like rings are respectively bonded. A clad metal is laminated on a frame-like base in advance, and the clad metal which can be melted and connected by heating is placed on the bonding side and melted by heating and connected to the bottom base, and therefore it becomes unnecessary that a brazing tiller metal is individually molded, and the dislocation of the brazing filler metal which is brought about at the time of brazing (becomes the cause of brazing failure) is eliminated and further, the working efficiency for assembling into a jig is enhanced to produce the advantage of increasing profitable efficiency.