Mathematical model and solving for the Location problem of sanitation service sites in a country village and town

Objective: To adapt the reform of country sanitation system,and provide the evidence for the location of the sanitation service sites,Methods:we establish a mathematics model,and solve it using heuristic method.Results: According to the model,we obtain that three stations can be founed in a town comprising 13 villages.Conclusion: It conveniencies the hospitalize of crowd,and economize the resouce of nation.