Abstract According to the literature report, the decomposition reaction of NaClO and KClO3 is very similar. Whether the catalyst such as MnO2 and CuO for the decomposition reaction of KClO3 has similar effective for NaClO? The experimental results show that CuO has a significance catalytic effective for the decomposition of NaClO. In order to explore the reaction process of NaClO at the existence of catalyst, lower pyrolysis temperature of NaClO makes it possible to find the middle products at a relative lower temperature condition.