Abstract: Multi management in big enterprises saw a rough road both at home and abroad in the past years.the main reason lies in the fact that some enterprises carried out multi management blindly and neglected the main management,therefore they wrongly used the management model and source of capital and carried out multi management too early and too quickly.So I think the best way is to enlarge enterprise when strengthening it,to select correct management model and source of capital,to develop the leading product...