Power lines are the important part of power transmission in safety, whose health is directly related to the safe operation of the power system. As an important technology of modern information collection, wireless sensor networks with low power consumption and low cost can be applied to power lines monitoring. For the high quality of the real-time and reliability of the data transportation in the wireless sensor networks, the paper gives a research on the routing algorithms and proposes a max-min ant colony algorithm. Through the long chain wireless sensor networks built by the CC2530 communication module, the method proposed in paper is experimented. Experimental results show that the method is effective and feasible.