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Background and Objective: Neural stem cells can difrentiate to mature neural cells. Neural stem cells can migrate and repair the damage neural tissue. This study was done to determine the effect of hydro-ethanolic extract of Chamaemelum nobile on cell prolifration and apoptosis of rat hipocample neural stem cells in the oxitative stress condition. Methods: In this experimental study, neural stem cells were isolated from hippocampus of neonatal rat brain. Isolated neural stem cells were treated at 200, 400, 600, 800 and 1000 µg/ml of hydro-ethanolic extract of Chamaemelum nobile for 48h. Cells proliferation rate were evaluated by MTT assay. Anti-apoptotic property of hydro-ethanolic extract of Chamaemelum nobile evaluated using TUNEL assay method. Results: Proliferation of neural stem cells were significantly increased in Chamaemelum nobile extract group in comparision with control (P<0.05). The rate of apoptotic cells were significantly reduced in Chamaemelum nobile extract group compared to control (P<0.05). Conclusion: The hydrethanolic extract of Chamaemelum nobile increases proliferation rate and reduces apoptosis of neural stem cells in the oxitative stress condition.