The national “11^thFive Years Plan” presents an infrangible index to keep 120 million hm² of plowlands, which demands a most strict plowland protective system to control the plowland reduction, an augment of plowlands and land consolidation. The investment of land consolidation includes four aspects such as investment owner, fund source, fund operation and profit distribution based on five basic principles: “taken from land and used for land”, “who pays, who earns”, “management out of utilization”, “multiple fund source channels” and “local adaption”, which needs a reconstruction and optimization in fund investment mechanism, fund operation mechanism, profit distribution mechanism and fund supervision mechanism.