The invention discloses a high-detection-precision identification device for azithromycin content, which comprises a first base, wherein waterproof pads are welded at the four corners of an outer wall of the bottom of the first base; a detection cylinder is fixed on one side of an outer wall of the top of the first base by a screw; a liquid level sensor is fixed on an inner wall of the top of the detection cylinder by a screw; a second base is welded on the other side of the outer wall of the top of the first base; an L-shaped support column is welded on an outer wall of the top of the second base; a connecting plate is welded on an outer wall of one end, far away from the second base, of the support column; and an illuminating lamp is fixed on an outer wall of the bottom of the connecting plate by a screw. The identification device is reasonable in structure and simple to operate; an error of water quantity added to the detection cylinder is small; the accuracy of a detection result is ensured; the concentration of azithromycin can be displayed by a liquid crystal display screen; the relatively accurate detection result can be obtained; the detection precision is higher; and the illuminating lamp can ensure that working personnel can still work normally under a darker lamplight condition.