This nerve stimulation apparatus is a nerve stimulation apparatus that is placed in a living body and performs electrical stimulation on nerves, and includes a first electrode portion that has a first stimulation electrode and is disposed inside the living body, and a first stimulation. Stimulus generation having a second stimulation electrode having a larger area than the electrode, and having a second electrode portion disposed on the body surface or subcutaneously, and a stimulus generation portion for generating a nerve stimulation signal for applying electrical stimulation A device, and a lead portion that connects the first electrode portion and the second electrode portion to the stimulus generator.この神経刺激装置は、生体に留置されて神経に電気刺激を行う神経刺激装置であって、第一の刺激電極を有し生体の内部に配置される第一の電極部と、第一の刺激電極よりも面積が大きい第二の刺激電極を有し、体表面又は皮下に配置される第二の電極部と、電気刺激を印加させるための神経刺激信号を生成する刺激生成部を有する刺激発生装置と、第一の電極部及び第二の電極部と刺激発生装置とを接続するリード部と、を備える。
