Air-water separator for ventilation and drainage of anchoring lawn in professional football field

The air-water separator comprises a machine body, an air-water inlet pipe, an exhaust pipe, a first drainage pipe and a first liquid conveying device, the machine body comprises a closed shell and an inner cavity, the inner cavity is located in the closed shell, one end of the air-water inlet pipe is connected with the closed shell and communicated with the inner cavity, and the other end of the air-water inlet pipe is communicated with the exhaust pipe. One end of the exhaust pipe is connected with the closed shell and communicated with the inner cavity, and the other end of the exhaust pipe is located outside the closed shell and used for being connected with a vacuum pump, and the first liquid conveying device is arranged in the inner cavity and connected with one end of the first drainage pipe; the other end of the first drainage pipe penetrates through the closed shell, is exposed out of the closed shell and is used for being connected with a first drainage main pipe anchoring a lawn. The device can meet