The Book Presents A Set Of Novel, Efficient And Systematic Concurrent Multiscale Optimization Methods By Considering The Distribution Of The Material In Macro-scale And The Unit-cell Configuration Design In Micro-scale Simultaneously. Different From The Traditional Optimization Method That Is Performed In A Single Scale, The Proposed Methods Could Generate A Great Deal Of Improvements In Structural Performance Through The Multiscale Structure-material Concurrent Optimum Design.the Proposed Theory And Methods Are Related To Statics, Dynamics, Thermoelastics And The Coupling Of Different Physical Fields. Therefore, It Provides A Comprehensive Designing Scheme When Multiple Factors Are Taken Into Account.