PROBLEM TO BE SOLVED: To provide a solid oxide fuel cell device in which components in a fuel cell module are hermetically joined each other by using a ceramic adhesive.SOLUTION: A solid oxide fuel cell device 1 for generating power by reacting fuel and oxidant gas, comprises a fuel cell module 2 housing a plurality of fuel battery cells 16, members are hermetically jointed each other by filling and hardening a ceramic adhesive at joints between members forming the fuel cell module, and cover members 19c, 67 for suppressing generation of cracks during the ceramic adhesive hardening, are arranged on a filled part of the ceramic adhesive so as to cover the filled ceramic adhesive.