Abstract: The final determination of the development system and mining method in mine construction is a process of gradual optimization.To ensure Cangshan Project can realize a safe, economic and efficient operation so as to gain the expected benefit, a series of adjustments and optimizations were made on the underground development system and mining method by means of market survey, investigation, consultation, data reference and argumentation during the project feasibility study and implementation period.As a result, the development system and mining method which are under implementation now were formed.In the series of adjustments and optimizations, the irrational factors involved were regulated into rational ones, laying a good foundation for the project future efficient operation.

Key words: Cangshan Iron Mine, Development system, Mining method, Optimization