<p>Porous organic materials have emerged as a highly promising class of functional materials, distinguished by their exceptionally high specific surface areas, controllable pore architectures, versatile functionalization potential, and remarkable structural diversity. These exceptional characteristics position them as superior candidates for advanced applications spanning catalysis, energy storage, adsorption, and separation. The strategic use of multifunctional organic monomers and efficient polymerization methods offers an effective approach to the facile production of novel organic porous materials, particularly those based on phloroglucinol, solidifying this area as a research hotspot. This review highlights recent advances in synthesizing novel organic porous materials from C₃-symmetric phloroglucinol and its derivatives, with a focus on their applications in environmental remediation, including CO₂ adsorption, organic dye removal, and metal ion detection. Phloroglucinol is capable of undergoing diverse C- and O-functionalization reactions and exhibits the unique property of C₃ symmetry. These characteristics endow phloroglucinol with remarkable potential for designing novel material frameworks and developing functionally specific materials. By leveraging innovative chemical modification and topological design strategies, phloroglucinol and its functionalized derivatives are poised to play a pivotal role in advancing high-performance materials, particularly in tailoring structural properties and enhancing functional capabilities.</p> Graphical Abstract <p></p>