MEMS/NEMS are facing challenges of high friction and severe wear, which demand advanced solid lubricants. As an emerging class of two-dimensional materials, MXenes exhibit outstanding lubricity for their low shear strength and film-forming characteristics. However, the poor durability of MXene solid lubricant severely restricts its application. Inspired by “brick-concrete structure”, a simple ionic bridging method was firstly performed to obtain MXene-based films with extraordinary mechanical and tribological properties. The experimental results revealed that metal ions bridged with the surface groups of MXene and GO nanosheets to form ion-strengthened films, and covalent and hydrogen bonds were also formed in the films. Those interactions acted as “concrete”, which significantly enhanced the mechanical properties of MXene/GO nanocomposite films. For the positive correlation between mechanical properties and tribological properties, significant enhancement was achieved in the service life of ionic bridging strengthened MXene/GO films. The lubrication mechanisms are ascribed to the film-forming effect, continuous lubricant replenishment, and the excellent mechanical properties of the strengthened films. This work offered a simple method to strengthen the mechanical properties and enhance the abrasion durability of nanocomposite films. The prominent lubricity and durability of ionic bridging MXene/GO nanocomposite film render it a promising lubricant in precision mechanical devices, MEMS/NEMS, etc.