Abstract: Loose and porous are typical micromorphology characteristic of aluminum alloy micro-arc oxidation film. The existence of micropores reduces the corrosion resistance of the film, which can provide a good carrier for the further modification of the film.The micro-pores of 6061 aluminum alloy micro-arc oxidation film were used as the carrier, and the influence of LDHs morphology on the friction properties of MAO film was investigated by hydrothermal in-situ loading of LDHs.The phase and morphology characteristics of MAO-LDHs composite films with different crystallization times were analyzed by XRD and SEM.Then, the friction coefficient of the film was measured by high-speed reciprocating friction and wear instrument. The results show that the appearance of LDHs can significantly reduce the friction coefficient of the film and make the wear process more stable.The hardness of the film decreases with the extension of crystallization time, and when it reaches 36 h, the hardness of the composite film is close to that of the matrix. The control of crystallization time is the key to prepare MAO-LDHs composite films by hydrothermal synthesis and improve their friction properties.