Laser repair contrast experiments by using nickel-based superalloy material FGH95 powder are performed on the GH4169 that is commonly used in aero-engine filed under different laser linear energy densities q. By testing the flexural property and analyzing the metallic phase, the influence of the laser linear energy density on flexural properties of repaired samples and microscopic mechanism of flexural property change are studied. The results indicate that the flexural strength of repaired samples is close to that of original sample and basically achieves flexural property of original sample. When q=120.0 J/mm2, the flexural strength of 827.16 MPa is maximum and has a 0.5 percent larger than that of original sample. With laser linear energy increasing, the flexural strength of repaired samples first increases and then decreases. The flexural property decreases at a higher laser energy density of 154.3 J/mm2 due to the coarsening of repaired area dendrites.