The paper presents a novel functional–structural integrated aramid nanofiber-based honeycomb material (MAAH) that exhibits ultrahigh strength and multifunctional properties. The authors develop a straightforward assembly strategy using aramid nanofibers (ANFs) and MXene nanosheets to create a honeycomb structure. This approach results in a honeycomb with a compressive strength of 18.6 MPa and toughness of 2.0 MJ m\(^{-3}\), significantly higher than commercial honeycombs. The unique three-dimensional (3D) conductive network formed by MXene and the hierarchical structure of the honeycomb enhance its microwave absorption performance, achieving a minimum reflection loss of −38.5 dB at a thickness of 1.9 mm, covering the entire X-band bandwidth. Additionally, MAAH demonstrates exceptional infrared thermal stealth, sound absorption, and real-time structural integrity monitoring. The manufacturing process is scalable and recyclable, making it promising for aerospace and military applications. The study addresses the limitations of traditional aramid honeycombs, such as complex preparation processes and poor mechanical properties, by providing a more robust and versatile material.The paper presents a novel functional–structural integrated aramid nanofiber-based honeycomb material (MAAH) that exhibits ultrahigh strength and multifunctional properties. The authors develop a straightforward assembly strategy using aramid nanofibers (ANFs) and MXene nanosheets to create a honeycomb structure. This approach results in a honeycomb with a compressive strength of 18.6 MPa and toughness of 2.0 MJ m\(^{-3}\), significantly higher than commercial honeycombs. The unique three-dimensional (3D) conductive network formed by MXene and the hierarchical structure of the honeycomb enhance its microwave absorption performance, achieving a minimum reflection loss of −38.5 dB at a thickness of 1.9 mm, covering the entire X-band bandwidth. Additionally, MAAH demonstrates exceptional infrared thermal stealth, sound absorption, and real-time structural integrity monitoring. The manufacturing process is scalable and recyclable, making it promising for aerospace and military applications. The study addresses the limitations of traditional aramid honeycombs, such as complex preparation processes and poor mechanical properties, by providing a more robust and versatile material.