Air purification device for increasing oxygen content based on microalgae and use method of air purification device

The invention discloses an air purification device for increasing the oxygen content based on microalgae and a use method of the air purification device, and relates to the field of gas purification, the air purification device comprises a liquid storage pool, a transparent material top cover, a top cover fixing clamp, a heater, a heater support, an air pump, an air guide pipe and a sensor insertion plate, to-be-purified air is introduced into the liquid storage tank through the air pump and the air guide pipe, the to-be-purified air is supplied to microalgae for photosynthesis so as to convert carbon dioxide into oxygen, and the oxygen escapes from the air escape opening; the sensor plug board, the heater and the air pump are all connected to the controller, the concentration of carbon dioxide in algae liquid and the temperature of the algae liquid and the environment are monitored, the air injection rate of the air pump and the power of the heater are adjusted, the temperature of the algae liquid is made to