According to such characteristics in the entire mineral process as complicated working condition, nonlinearity, variable time lag and multi-variable coupling, the Auto-control System for the Entire beneficiation plant, through synergic control over the key variables in a beneficiation plant, generally reduces the production costs in a beneficiation plant and increases the production benefits with such a result as general benefits being higher than the benefits obtained from the independent control over the variables in different processes in the factory. It is one set of automatic optimization system with high adaptability and has had numerous successful cases in mineral natures as magnetite, copper ore, gold ore, molybdenum ore, nickel ore, bauxite, graphite ore, lead-zinc ore, etc.