Algae gametophyte multiplication culture device

The utility model relates to an algae gametophyte multiplication culture device, which belongs to the field of algae breeding devices and comprises a culture bottle, a bottle cap, a small motor, a rotating rod, a rotating shaft, a first filter plug, an exhaust pipe, a second filter plug, an inflation pipe and an air pump. One end of the small motor is connected with a power supply, and the other end of the small motor is connected with a rotating rod inserted into the bottom of the culture solution through a rotating shaft; one end of the inflating tube is inserted into the bottom of the culture solution, and the other end penetrates out of the bottle cap and is sequentially communicated with the first filter plug and the air pump; the upper end of the exhaust pipe is connected with the second filter plug, the lower end of the exhaust pipe is inserted into the culture bottle through the bottle cap and above the culture solution, and gas in the culture bottle is exhausted through the exhaust pipe via the secon