In　today＇s　digital　era,　electromagnetic　radiation　pollution　and　fire　hazard　stand　as　a　dual-edged　sword,　not　only　diminishing　the　efficacy　of　sophisticated　electronic　devices　but　also　threatening　human　health.　As　a　result,　the　pursuit　of　advanced　electromagnetic　shielding　materials　with　high　flame　retardancy　has　ascended　to　the　forefront　of　research　priorities,　underscoring　their　crucial　role　in　mitigating　these　risks.　In　this　study,　pyrrole　polymerization　was　employed　to　obtain　a　modified　PPy-MXene,　which　was　used　to　construct　flame　retardant　modified　MXene　aerogel　composites　by　the　＇Concreting＇　method.　It　was　found　that　peak　heat　release　rate,　the　total　heat　release,　peak　CO₂　production　rate,　peak　smoke　production　rate　and　total　smoke　release　of　the　C1M2MTFRs　were　reduced　by　67.7　%,　46.7　%,　71.4　%,　71.7　%　and　77.3　%,　respectively.　Furthermore,　the　average　electromagnetic　interference　shielding　effectiveness　of　C1M2MTFRs　in　the　X-band　and　K-band　reached　67.3　dB　and　91.4　dB,　respectively.　It　was　noted　that　CMMTFRs　had　the　ultra-low　reflectivity　(as　low　as　0.14).　Additionally,　the　mechanical　durability　and　strength　of　the　aerogel　composites　were　obviously　enhanced,　with　compressive　stress　increased　by　a　factor　of　3.2,　in　comparison　with　that　of　the　CNF　aerogel.　©　2025　Elsevier　B.V.