Background:　Cleft　palate　is　a　prevalent　oral　and　maxillofacial　malformation　that　requires　complex　surgical　interventions.　In　cleft　palate　repair,　managing　flap　tension　is　critical　to　avoid　complications　such　as　flap　rupture　and　impaired　healing.　Additionally,　excessive　flap　movement　can　compromise　blood　supply,　affecting　postoperative　outcomes.　A　thorough　understanding　of　these　biomechanical　factors　is　crucial　for　surgical　success.　Methods:　A　three-dimensional　finite　element　model　was　developed　using　CT　scan　data　to　simulate　the　biomechanical　behavior　of　the　cleft　palate　under　surgical　conditions.　The　model　was　constructed　and　analyzed　using　ANSYS　Workbench　and　related　software,　incorporating　material　properties　of　bone,　mucosa,　and　muscle.　Stress　and　deformation　distributions　were　calculated　to　evaluate　surgical　incision　points　and　flap　movement.　Results:　The　model　identified　critical　areas　of　high　tension　and　movement　along　the　surgical　incisions　on　both　oral　and　nasal　surfaces.　The　maximum　deformation　observed　was　3.9885 mm,　with　stress　concentration　points　along　the　suture　lines　and　flap　edges.　The　results　highlighted　specific　regions　prone　to　mechanical　stress,　which　are　crucial　for　optimizing　surgical　strategies.　Conclusion:　This　study　demonstrates　the　potential　of　a　3D　finite　element　model　in　predicting　mechanical　responses　of　the　cleft　palate　during　surgical　repair.　The　findings　provide　surgeons　with　valuable　insights　for　improving　incision　placement,　flap　design,　and　suturing　techniques　to　minimize　tension　and　enhance　healing.　This　personalized　approach　could　significantly　improve　surgical　outcomes　and　reduce　postoperative　complications　in　cleft　palate　repair.　©　The　Author(s)　2025.