A solid oxide fuel cell and a manufacturing method thereof includes a unit cell and a cell coupling member. The unit cell includes a first electrode layer, an electrolyte layer surrounding an outer peripheral surface of the first electrode layer, and a second electrode layer surrounding the electrolyte layer so that one end portion of the electrolyte layer is exposed. The cell coupling member is coupled to the unit cell and includes a coupling member. A sealing member including at least two layers having different porosities is coated on at least one portion of the coupling member to seal the unit cell and the cell coupling member.