Gas sampling device for environment detection

The utility model discloses a gas sampling device for environment detection, which comprises a support base, a fixed seat is fixedly mounted at the top of the support base, a collecting tank is movably mounted in the fixed seat, and a moving mechanism is fixedly mounted at the top of the support base and positioned on the right side of the collecting tank. A protection box is fixedly mounted at the top of the moving mechanism, and an exhaust fan is fixedly mounted in the protection box. Through the arrangement of the electric sliding table, the electric sliding table in the supporting plate runs, a sliding block in the electric sliding table slides, the sliding block moves to drive a fixing plate to move, the fixing plate moves to drive a protection box to move, the protection box moves to drive an internal exhaust fan to move, and the exhaust fan can collect ambient air at different heights; an exhaust fan collects air into a hose, and the air is conveyed into a collecting tank through the hose, so that the