An object of the present invention is to provide a structure and a manufacturing method of a light emitting device, which reduces the amount of water remaining in the light emitting device. Another object of the invention is to provide a structure and a manufacturing method of a light emitting device, which suppresses the deterioration of a light emitting element due to water remaining in the light emitting device. A light emitting device of the invention includes a thin film transistor, an insulating layer covering the thin film transistor, an electrode which is electrically connected to the thin film transistor through a contact hole formed on the insulating layer, and a light emitting element formed by interposing a light emitting layer between a first electrode which is electrically connected to the electrode and a second electrode. The light emitting device further includes a layer formed of a different material from that of the insulating layer only between the electrode and the first electrode over the insulating layer and the insulating layer.