Fixing structure of metal pipeline anti-corrosion coating device

The utility model relates to the technical field of anti-corrosion coating of metal pipelines, discloses a fixing structure of an anti-corrosion coating device of a metal pipeline, and solves the problem that the fixing mode is inconvenient when the inner coating and the outer coating of the fixing structure are replaced. Through a connecting rod A, a connecting rod B and a clamp, when the outer wall of the metal pipeline needs to be coated, an electric push rod A extends to enable a circular ring B to move on a sliding rod, the connecting rod B pushes the connecting rod A to be unfolded, and therefore the upper surface of the clamp can make contact with the inner side of the metal pipeline, and the metal pipeline is fixed; and when the inner wall of the metal pipeline needs to be coated, the clamp surrounds the outer portion of the metal pipeline, an electric push rod A contracts to enable a circular ring B to move on a sliding rod, a connecting rod B is driven to pull the connecting rod A to contract, and t