Underground water level observation device for hydrogeological exploration

The utility model relates to the technical field of water level observation, and particularly discloses a hydrogeological exploration underground water level observation device which comprises a moving box, a first moving wheel and a second moving wheel, the bottom of the moving box is fixedly connected with a suspension body, the surface of the suspension body is fixedly connected with a measuring tape, and the other end of the measuring tape is provided with a winding roller. A first rotating rod is coaxially and fixedly connected to the inner wall of the winding roller, the first rotating rod penetrates through the winding roller, supporting plates are fixedly connected to the two ends of the first rotating rod, supporting legs are symmetrically and fixedly connected to the surfaces of the supporting plates, and the buoyancy of the suspension body is larger than the gravity of the moving box and accessories of the moving box. The moving box moves at the position to be measured to drive the measuring flexib