Power route optimization accounts for a large proportion in the whole plan of the electricity. In order to save investment, the adoption of improved ant colony algorithm solves this problem to get the shortest path.The algorithm proposes that the inspired factor approaches a constant value with the evolution generations,which enhances the convergence speed.Firstly this algorithm applied to travelling salesman problem which shows this one is valid,then applied to the power route optimization problem which verifies that the improved ant colony algorithm is better than the basic one.