Abstract: Disclosed is an electrode assembly which can solve, in a complex way, the lithium leaching problem caused by the electrode sliding phenomenon, the problem that the outer separator of the half-cell is easily folded and torn, thereby exposing the electrode, and the problem that it is difficult to check whether the electrode is damaged because the outer separator of the half-cell is opaque, by changing the outer separator of the half-cell located at the outermost part of the electrode assembly to a specific shape and material, and a secondary battery comprising the same.