To investigate the anisotropy of the tensile strength caused by laser cladding deposition, the influence of the scanning direction (from high to low and from low to high) on the microstructure and mechanical properties of the ramp's thin-walled part is explored based on the variable thickness cladding layer deposition. Tensile strength and hardness at different positions on the ramp's thin-walled part are tested, and its microstructure is analyzed by comparing it with that formed via uniform thickness cladding layer deposition. Results show that the grain growth direction in the longitudinal section is affected by the scanning direction when variable thickness cladding layer deposition is used. Furthermore, the grain growth direction and scanning track influence the tensile strength at different positions of the thin-walled part. Tensile strength anisotropy can be obviously reduced by depositing the variable thickness cladding layer in the scanning direction from low to high. In the horizontal direction, the change in hardness is consistent under different scanning directions. Additionally, variable thickness cladding layer deposition changes the maximum hardness distribution of the thin-walled part.