Objective　The cells of subventricular zone in lateral wall of lateral ventricle of adult rats were localized. Method　Immunohistochemistry. Results　Polysialylated neuronal cell adhesion molecule and phosphotyrosine immunoreactive cells were found in subventricular zone, and they have same distributions, however, no any parvalbulin immunoreactive cells were found in subventricular zone. Conclusion　neuronal precursor cells in subventricular and expression of phosphotyrosine are associated with proliferation of neuronal precursor cells in subventricular zone.