A negative ionizer air purifier is provided. The negative ionizer air purifier includes a housing and at least two discharge terminals. The housing is defined with at least two receiving holes corresponding to the discharge terminals each disposed through the corresponding receiving hole, and is hollowed out at the periphery of each discharge terminal and at the part between the discharge terminals. By the present disclosure, the discharge terminals can be effectively electrically separated, such that the short circuit between the discharge terminals caused by the carbon, produced from the decomposition of the carbon dioxide in the surrounding air and attached to the surface of the housing, can be avoided.
