In order to balance the running time of each air compressor in semi-submersible lifting and dismantling platform, the optimal control strategy is designed for the starting and stopping of the air compressor. The fuzzy rules are drawn up for the starting and stopping of the air compressor by the fuzzy theory. Mamdani algorithm is chosen as the fuzzy inference method, and the simulation experiment of the typical working condition is carried out. The experimental results show that the control strategy can balance the running time of each air compressor while satisfying the demand of air supply, thus the service life of the air compressor is extended.