A functional-structural integrated aramid nanofiber-based honeycomb material (MAAH) with ultrahigh strength and multifunctionalities is developed through a straightforward assembly strategy of aramid nanofibers (ANFs) and MXene nanosheets onto honeycombs. The material exhibits robust cell nodes and a dense network structure, achieving compressive strength of 18.6 MPa and toughness of 2.0 MJ m$^{-3}$, which are 6 and 25 times higher than commercial honeycomb materials. The unique three-dimensional conductive network formed by uniformly distributed MXene and the hierarchical honeycomb structure endow the material with superior microwave absorption performance, achieving a minimum reflection loss (RL$_{min}$) of -38.5 dB at a thickness of 1.9 mm, covering almost the entire X-band bandwidth. Additionally, MAAH demonstrates exceptional infrared thermal stealth, sound absorption, and real-time structural integrity monitoring. The material's outstanding wave-absorbing performance, ultrahigh strength, and scalable, recyclable manufacturing technique make it promising for aerospace and military applications. The MAAH is fabricated via a vacuum-assisted filtration (VAF) method, where strong interactions between ANFs and MXene nanosheets generate a dense 3D network and hierarchical structure. The synergistic effects of conductance loss, dipole polarization loss, and interfacial polarization loss contribute to excellent microwave absorption performance. The material's unique structural features also provide high mechanical robustness, thermal insulation, flame resistance, and sound absorption. The strategy allows for scalable production and a closed-loop cycle of microwave-absorbing honeycombs, offering insights for next-generation microwave-absorbing honeycombs.A functional-structural integrated aramid nanofiber-based honeycomb material (MAAH) with ultrahigh strength and multifunctionalities is developed through a straightforward assembly strategy of aramid nanofibers (ANFs) and MXene nanosheets onto honeycombs. The material exhibits robust cell nodes and a dense network structure, achieving compressive strength of 18.6 MPa and toughness of 2.0 MJ m$^{-3}$, which are 6 and 25 times higher than commercial honeycomb materials. The unique three-dimensional conductive network formed by uniformly distributed MXene and the hierarchical honeycomb structure endow the material with superior microwave absorption performance, achieving a minimum reflection loss (RL$_{min}$) of -38.5 dB at a thickness of 1.9 mm, covering almost the entire X-band bandwidth. Additionally, MAAH demonstrates exceptional infrared thermal stealth, sound absorption, and real-time structural integrity monitoring. The material's outstanding wave-absorbing performance, ultrahigh strength, and scalable, recyclable manufacturing technique make it promising for aerospace and military applications. The MAAH is fabricated via a vacuum-assisted filtration (VAF) method, where strong interactions between ANFs and MXene nanosheets generate a dense 3D network and hierarchical structure. The synergistic effects of conductance loss, dipole polarization loss, and interfacial polarization loss contribute to excellent microwave absorption performance. The material's unique structural features also provide high mechanical robustness, thermal insulation, flame resistance, and sound absorption. The strategy allows for scalable production and a closed-loop cycle of microwave-absorbing honeycombs, offering insights for next-generation microwave-absorbing honeycombs.