Superhydrophobic metallic surfaces have attracted much attention in aeronautical and biomedical applications. In this study, an easy-to-operate one-step selective laser melting (SLM) was adopted to fabricate superhydrophobic surface from TiC/Inconel 718 nanocomposites. The work studied the surface morphology, roughness, wettability and corrosion resistance by SLM with variation of laser processing parameters. The results showed that with the increase of laser scan speed (v), the surface morphology experienced a successive change: relatively smooth surface - micro/nano hierarchical rough surface - cracked surface. The corresponding surface roughness increased from 9.81 mu m to 15.06 mu m. At a proper v of 600 mm/s, the multi-scaled structure with micro-metallic balls and uniform nano-particles showed superhydrophobicity with the contact angle about 151.5 degrees. The electrochemical measurements showed that the fabricated superhydrophobic surface exhibited excellent anti-corrosion performance that could behave as the barrier for inhibiting the corrosion of composites. The formation mechanisms of the surface morphologies and different wetting behaviors were analyzed.