Negative oxygen ion generator and negative oxygen ion generation method

The invention discloses a negative oxygen ion generator and a negative oxygen ion generating method.The negative oxygen ion generator comprises a generating container, an air inlet assembly, an air inlet adjusting device and a negative oxygen ion discharging piece, a collision structure is arranged in the generating container, and the generating container is used for containing water; the air inlet assembly is installed on the generating container and extends towards the bottom of the generating container, the end, close to the bottom of the generating container, of the air inlet assembly is spaced from the collision structure and provided with an air spraying hole facing the collision structure, the air spraying hole and the collision structure are used for stretching into water in the generating container, and the air spraying hole is used for spraying compressed air to impact the collision structure. Negative oxygen ions are formed; the air inlet adjusting device is connected with the air inlet end of the