隔区和海马都是与疼痛和针刺镇痛有关的结构，为了提供更多的形态学基础，采用辣根过氧化物酶（ＨＲＰ）与还原型辅酶 Ⅱ黄递酶（ ＮＡＤＰＨ－ｄ）相结合法，逆行追踪大鼠隔区不同亚细胞群一氧化氮合酶（ ＮＯＳ）阳性神经元向背、腹海马及海马后部的投射。结果表明，隔内侧核、斜角带核垂直支背、腹侧部均有ＮＯＳ阳性神经元投射到背、腹海马及海马后部，其投射量约为隔－海马投射的１／３左右。 Septum and hippocampus were all related to pain and acupuncture analgesia. In order to provide more morphological basis, HRP and NADPH-d Combined with retrograde tracing of the projection of nitric oxide synthase (NOS) positive neurons in different subpopulations of rat compartment to the dorsal, ventral, hippocampus and posterior segments of the hippocampus. The results showed that NOS positive neurons were projected to the dorsal, ventral hippocampus and hippocampus posterior to the medial nucleus, the vertical back of ventral nucleus and the ventral part of the medial nucleus.