The utility model discloses a groove cleaning elevation controller for a rock geological base. The groove cleaning elevation controller comprises a base; the outer circular ring rail is fixed on the base; inner circular ring rail, the two movable cross rod assemblies are movably arranged in the rail surface of the outer circular ring rail; the first end of the movable cross rod assembly is hingedto an outer ring sliding fastener, the second end of the movable cross rod assembly is hinged to an inner ring sliding fastener, the outer ring sliding fastener is arranged on the outer ring rail in asliding mode, the inner ring sliding fastener is arranged on the inner ring rail in a sliding mode, and self-locking pieces are arranged on the outer ring sliding fastener and the inner ring slidingfastener; the lower end of the vertical rod penetrates through the inner circular ring rail and is supported on the base; the cross rod is vertically connected to the vertical rod; and the length-adjustable measuring belt is connected to the cross rod. The vertical rod can be adjusted to be vertical, the height can be read, the measuring range of the top cross rod can be adjusted through stretching and rotating, and the length of the measuring belt is determined according to the difference between the elevation of a positioning base point and the elevation of a control point of the elevation controller.