 This review discusses the potential of porous carbon, PC, materials derived from biomass sources for electromagnetic wave absorption, highlighting their unique features such as hierarchical texture and periodic pattern. The challenge lies in large scale production through low cost and simple synthetic routes. The article summarizes EM wave absorption applications of biomass derived PC materials, discusses the corresponding synthetic mechanisms and development prospects and provides a perspective on the field. This article was authored by Huang Qinjiao, Yan Cheng, Wei Lu, and others.