Abstract: A new type of foil material of stainless steel ultra-thin strip with light mass (thickness only 0.01-0.1 mm), high strength, easy to form, corrosion resistance and many other advantages, is a kind of light and high strength material with great application prospects. In order to investigate the feasibility of stainless steel ultra-thin strip as a component material of fiber metal laminates and evaluate its mechanical properties, six different surface treatment processes of stainless steel ultra-thin strip were compared. It is proved that mechanical grinding + acetone cleaning + 10wt% sodium hydroxide solution corrosion + 1wt% coupling agent is the best surface treatment technology for the composite of stainless steel ultra-thin strip and carbon fiber prepreg, the single lap tensile shear strength is 21.3 MPa. Based on this technology, fiber metal laminates containing different layers and different types of stainless steel ultra-thin strips were prepared by using T700 carbon fiber unidirectional prepreg, T300 plain braid prepreg and soft, semi-hard and hard stainless steel ultra-thin strips with thickness of 0.1 mm. The bending properties and deformation failure mechanism of the laminates were systematically studied by three-point bending experiments. The results show that the bending failure mode of carbon fiber/stainless steel ultra-thin strip fiber metal laminates is mainly affected by the change of steel strip strength and toughness, the bending deformation is mainly affected by the content of steel strip.