Water area greenhouse gas emission monitoring device

The utility model discloses a water area greenhouse gas emission monitoring device, which comprises a collecting box main body, a floating part is arranged below the side surface of the collecting box main body, and the collecting box main body comprises a plurality of gas collecting boxes which are arranged in parallel and are not communicated with one another; a bracket is fixedly arranged on the collecting box main body, the bracket is in shaft connection with turntables of which the number is the same as that of the gas collecting boxes, a plurality of telescopic rods are fixedly arranged on the turntables, each telescopic rod is detachably connected with a collecting bottle, and a rubber valve is arranged at the opening of each collecting bottle; a gas collection port is formed in the position, opposite to the rotary disc, of the gas collection tank, a pressure sensor is fixedly arranged on the side, located in the gas collection tank, of the gas collection port, a support is fixedly arranged on the side