目的　观察侧脑室脑室下层细胞的形态及分布。方法　制作成年大鼠侧脑室脑室下层的超薄切片和全脑连续石蜡切片。结果　脑室下层细胞主要分布在侧脑室外侧壁 ,从侧脑室出现平面延续到尾壳核消失平面。其中的神经元前体细胞胞质游离核糖体较多 ,核大 ,核内的染色质疏松。结论　脑室下层细胞和尾壳核及伏隔核相邻 ,其中的细胞多数具有未成熟形态特点 Objective To observe the morphology and distribution of the subventricular layer in the lateral ventricle. Methods Ultrathin sections and whole brain continuous paraffin sections of the inferior ventricle of adult rats were made. Results The cells in the inferior ventricle mainly distributed in the lateral lateral ventricle, extending from the lateral ventricle to the plane where the caudate putamen disappeared. Among them, there are more cytoplasmic free ribosomes in neuron precursor cells, large nuclei and loose chromatin in the nucleus. Conclusion The cells in the inferior ventricle are adjacent to the caudate putamen and nucleus accumbens. Most of them have immature morphological features