Metallic materials such as iron, steel, and aluminum and polymeric materials such as resins, fibers, and rubber, which are indispensable for our daily life, are developed for application under severe environment and weight reduction of structures. To enhance formability and reliability of the advanced materials, we are expecting the construction of theoretical models that can understand the mechanical properties based on the microscopic behavior of the material and express the deformation behavior of the advanced material.In this laboratory, complicated behavior of materials is calculated using Multiscale Plasticity that simultaneously express phenomena of different scales such as an atomic scale on crystal structures and a continuum scale on macroscopic structures. Furt