An organic light emitting display device, including: a first substrate on which a plurality of light emitting elements are formed; a second substrate that is disposed to be opposed to the first substrate; a primary dam member that is provided between the first substrate and the second substrate in order to surround the plurality of light emitting elements; a filler that is filled between the first substrate and the second substrate and in a first region defined by the primary dam member, an auxiliary dam member that is between the first substrate and the second substrate and in a second region outside the first region, and is made of porous material; and an inorganic sealant that is provided between the first substrate and the second substrate and in a third region outside the first region and the second region, and is jointed to the first substrate and the second substrate.