A pouch type lithium secondary battery includes an electrode assembly including a first electrode plate connected to a first electrode tap, a second electrode plate connected to a second electrode tap, and a separator interposed between the first and second electrode plates. The battery also includes a pouch exterior having an electrode assembly storing portion and at least a wing portion extending from at least an end of the electrode assembly storing portion. The wing portion entirely winding around side faces of the electrode assembly storing portion. A method of fabricating a pouch type lithium secondary battery is also disclosed.