A high-pressure anion generator relates to an electrical apparatus device producing negative oxygen ions, which comprises a casing, an anion generating cavity and a switch electrical source and is characterized in that the inside of the casing is provided with a humidity detecting device and a high-pressure generator. The humidity detecting device is connected with the switch electrical source and can adjust the output value of the high-pressure generator. The anion generating cavity comprises a fan, discharge needles, an anode board, a cathode board and a permanent magnetic body as an ion trap. The discharge needles are a plurality and are arranged according to a triangular wave at the anode board at the top of the anion generating cavity. The cathode board is arranged under the discharge needles. The permanent magnetic body is arranged at the lower ends of the left side and the right side of the anion generating cavity. The fan is placed at the back lateral side of the anion generating cavity. The utility model adopts the high working voltage and a plurality of discharge needles, which ensures no ozone, improves the anion concentration and has the great function of changing the living room environment and human body health.