A multi-objective optimization algorithm based on adaptive spatial division is proposed to solve the environmental/economic dispatch problem. As to keep the population diversity, the search space is divided into multiple regions, particles are guided by three kinds of local and global particles to rapidly near the Pareto optimal frontier, an age observer is used to record the contribution of reprintAuthors for particles near the Pareto optimal solution set real-timely, and reprintAuthors are changed in a certain cycle according to the contribut...