Abstract: The indentation method is used to assess the mechanical properties of materials, while it could cause micro-damage indentations on the material surface. The impact of these indentations on the corrosion resistance of materials has become a focus in the industry. In this work, Inconel 718 alloy was taken as the research object, and the effect of surface micro-damage indentation defects on its corrosion resistance was investigated by means of surface indentation method and salt spray test. Unindented specimen and three types of indented specimens with indentation loads of 100, 300, and 500 N were subjected to salt spray test in 5 wt.% NaCl environment for 0-264 h. The results showed that the mass loss of indented specimens was 3-5 times that of unidented specimens, whereas the mass loss of specimens under different indentation loads exhibited little difference. Inside the corrosion pits, there were uniformly distributed oxides of elements such as Cr, Fe, Ni, and Nb, along with a small amount of enriched Fe₃O₄. There was a stress concentration at the indentation site, which reduced the corrosion resistance of Inconel 718 alloy.