Negative-ion generator

The utility model discloses a negative ion generator, which includes a high voltage generation circuit and a discharge rack. The discharge rack consists of a non-electric rack body, at least one rectangular sheet metal and an electric thread. The sheet metal and the electric thread are both vertically fixed on the rack body through two end heads, wherein one end head of the sheet metal is connected with a negative high voltage output end of the high voltage generation circuit; the electric thread is connected with a positive high voltage output end of the high voltage generation circuit; the electric thread is mutually separated in parallel and the sheet metal is mutually paralleled and symmetrically separated. Each electric thread is positioned at the same outer side as the long rim of each sheet metal, separated in parallel with the long rim of the sheet metal. The discharge rack in the utility model has simple structure and no light or sound when discharging and is able to simultaneously form certain wind force during generating strong electric field to automatically blow out the generated negative ion, very suitable for the air purification and sterilization at the location such as bathroom, washroom, etc.