The multifactor system is a method to research land use state and toevaluate soil resources,using the theory of ecology and economy and thesystimatic thoughts,taking the unity of the benefits of ecology, economyand society as a goal, based on enough investigation and data collection.Then, various kind of factors related to land use planning are divided intosix categaries,computed in order of grade, balanced in times, and optimizedto get solution in linear programming. Secondly,planning programmersare evaluated comprehensively, the optimal land use programmer is chosenand put into use. When used, returnning information is gotten,and itis corrected frequnetly until the final goal is realized.