This study presents the synthesis and characterization of uniaxially oriented perovskite films with controllable orientation, specifically (111)- and (001)-oriented films, which exhibit distinct properties. The films were fabricated using antisolvent engineering, enabling precise control over their orientation. The (111)-oriented films showed lower hole trap density and higher electron trap density compared to (001)-oriented films, which is attributed to differences in surface termination and defect types on different crystal facets. The (111)-oriented films also demonstrated better stability due to an inorganic PbI6 octahedra layer on their surface, which suppresses ion migration and enhances phase stability. In contrast, (001)-oriented films exhibited severe phase separation due to ion migration channels parallel to the built-in electric field. Solar cells based on both orientations achieved high power conversion efficiencies (PCEs) of approximately 23% for normal bandgap (NBG) and 19.8% for wide bandgap (WBG) perovskite films. The (111)-oriented solar cells showed excellent stability, maintaining 95% of their initial efficiency after 1500 h of maximum power point (MPP) tracking and 97% after 3000 h of ambient aging. The (111)-oriented films also exhibited superior water and oxygen robustness, making them more suitable for practical applications. The study highlights the importance of controlling film orientation to optimize the performance and stability of perovskite-based devices. The findings provide a foundation for the rational design and targeted optimization of uniaxially oriented perovskite films for various electronic applications.This study presents the synthesis and characterization of uniaxially oriented perovskite films with controllable orientation, specifically (111)- and (001)-oriented films, which exhibit distinct properties. The films were fabricated using antisolvent engineering, enabling precise control over their orientation. The (111)-oriented films showed lower hole trap density and higher electron trap density compared to (001)-oriented films, which is attributed to differences in surface termination and defect types on different crystal facets. The (111)-oriented films also demonstrated better stability due to an inorganic PbI6 octahedra layer on their surface, which suppresses ion migration and enhances phase stability. In contrast, (001)-oriented films exhibited severe phase separation due to ion migration channels parallel to the built-in electric field. Solar cells based on both orientations achieved high power conversion efficiencies (PCEs) of approximately 23% for normal bandgap (NBG) and 19.8% for wide bandgap (WBG) perovskite films. The (111)-oriented solar cells showed excellent stability, maintaining 95% of their initial efficiency after 1500 h of maximum power point (MPP) tracking and 97% after 3000 h of ambient aging. The (111)-oriented films also exhibited superior water and oxygen robustness, making them more suitable for practical applications. The study highlights the importance of controlling film orientation to optimize the performance and stability of perovskite-based devices. The findings provide a foundation for the rational design and targeted optimization of uniaxially oriented perovskite films for various electronic applications.