利用ＮＡＤＰＨ－ｄ组化技术，观察大鼠生后１、７、１４、２１、２８天基底前脑内侧隔核（ＭＳ）和斜角带（ＤＢ）中ＮＯＳ阳性神经元的发育规律。结果发现，在出生后的前１４天，两个核团中的ＮＯＳ阳性神经元均经历了由少到多、胞体由小到大、突起渐丰富的成熟过程，而在１４天以后变化则不明显。文中对这两个核团中ＮＯＳ阳性神经元的功能意义进行了讨论。 The development of NOS positive neurons in basal forebrain medulla oblongata (MS) and bevel (DB) were observed by NADPH-d staining at day 1,7,14,21,28. The results showed that during the first 14 days after birth, NOS-positive neurons in both nuclei experienced a maturation process from as few as more cells to as large as protuberances, but not after 14 days obvious. The functional significance of NOS positive neurons in these two nuclei is discussed in this paper.