The article "Hierarchically Porous Materials: Synthesis Strategies and Structure Design" by Yu Yang, Li-Hua Li, Yu Li, Joanna Claire Rooke, Clément Sanchez, and Bao-Lian Su reviews the synthesis strategies and structure design of hierarchically porous materials. These materials, which exhibit a hierarchical structure in porosity, structural, morphological, and component levels, have gained significant attention due to their potential applications in energy conversion and storage, catalysis, photocatalysis, adsorption, separation, and life sciences. The review covers various synthesis methods, including templating techniques (surfactant templating, nanocasting, macroporous polymer templating, colloidal crystal templating, and bioinspired processes), conventional techniques (supercritical fluids, emulsion, freeze-drying, breath figures, selective leaching, phase separation, zeolitization, and replication), and basic methods (sol-gel controlling and post-treatment). The authors also discuss the advantages and challenges of natural hierarchically porous materials and present detailed examples of how these methods can be combined to create hierarchically porous structures with various chemical compositions, such as dual porosities (micro-micropores, micro-mesopores, micro-macropores, meso-mesopores, meso-macropores, and multiple porosities). The review aims to provide a comprehensive guide for researchers entering the field and those seeking quick access to information on the synthesis and control of hierarchically porous materials.The article "Hierarchically Porous Materials: Synthesis Strategies and Structure Design" by Yu Yang, Li-Hua Li, Yu Li, Joanna Claire Rooke, Clément Sanchez, and Bao-Lian Su reviews the synthesis strategies and structure design of hierarchically porous materials. These materials, which exhibit a hierarchical structure in porosity, structural, morphological, and component levels, have gained significant attention due to their potential applications in energy conversion and storage, catalysis, photocatalysis, adsorption, separation, and life sciences. The review covers various synthesis methods, including templating techniques (surfactant templating, nanocasting, macroporous polymer templating, colloidal crystal templating, and bioinspired processes), conventional techniques (supercritical fluids, emulsion, freeze-drying, breath figures, selective leaching, phase separation, zeolitization, and replication), and basic methods (sol-gel controlling and post-treatment). The authors also discuss the advantages and challenges of natural hierarchically porous materials and present detailed examples of how these methods can be combined to create hierarchically porous structures with various chemical compositions, such as dual porosities (micro-micropores, micro-mesopores, micro-macropores, meso-mesopores, meso-macropores, and multiple porosities). The review aims to provide a comprehensive guide for researchers entering the field and those seeking quick access to information on the synthesis and control of hierarchically porous materials.