Drill hole water level measuring device for hydrogeological exploration

The invention discloses a drilling water level measuring device for hydrogeological exploration, and relates to the technical field of water level measurement, the drilling water level measuring device comprises a water level pipe, a fixed pipe is fixedly connected to the cylindrical outer side wall of the water level pipe, and a mounting column is fixedly connected to the side, away from the water level pipe, of the fixed pipe; through the arrangement of the sliding measuring mechanism, the water level floats upwards to drive a measuring scale to move through a floating ball, so that an extrusion block moves to drive a cylindrical block and a fixed column to move, the fixed column moves to drive a movable rod and a piston to move, and red liquid exists in the two ends of a cylindrical pipe, so that the piston moves to extrude the red liquid into a thin pipe; when the water level rises and falls, the red liquid can enter the corresponding thin pipes, due to the fact that the thin pipes are thin and are made o