The utility model provides a column layering sludge collector's auxiliary fixture, including clamping rings, two at least fixed parts and a plurality of support, the support passes through the hinge and installs the outside at the clamping rings, the fixed part is inboard at the clamping rings through mounting screw. The device can carry out fine fixing to sludge collector, improves sludge collector's sample efficiency, uses manpower sparingly easy operation.