The invention provides a combined anti-galloping device based on energy consumption and the mismatching principle. The device comprises a spacer rod, a plurality of first connecting parts, and a plurality of damping mechanisms. Each first connecting part is connected with the inner wall of the spacer rod, and the first connecting parts are distributed in the spacer rod in a peripheral direction. The damping mechanisms are respectively connected between the adjacent first connecting parts, and each damping mechanism is used for reducing the vibration of a power transmission line connected withthe spacer rod. According to the invention, the interior of the spacer rod is connected with the plurality of damping mechanisms, and the vibration energy of the power transmission line is effectivelyconsumed through the plurality of damping mechanisms, thereby reducing the amplitude of the power transmission line, achieving the inhibition of the galloping of the power transmission line, and enabling the anti-galloping effect to be better.