It　is　a　very　worthwhile　research　topic　to　investigate　the　effects　of　crack　on　the　vibration　of　propeller　structures　in　engineering　practices.　In　this　paper,　responses　of　rotating　composite　laminated　beams　with　a　crack　is　analyzed　under　cyclic　loading.　Edge　cracking　is　considered　as　a　Rotating　Massless　Spring,　then　the　governing　motion　of　a　cracked　composite　laminated　beam　in　a　rotating　state　are　obtained　by　Hamilton＇s　principle.　The　harmonic　balance　method　is　used　to　solve　the　intrinsic　frequency　of　the　system　and　the　solution　of　the　eigenvalue　problem　was　obtained.　Then　the　effects　of　parameters,　such　as　crack　depth,　crack　location,　structural　rotational　speed　and　mounting　angle　on　the　free　vibration　of　the　structure　are　analyzed.　The　steady　state　response　of　the　system　is　investigated　using　the　Runge-Kutta　method　and　derived　the　effect　of　crack　parameters　on　the　vibration　response　of　the　structure.　The　simulation　results　show　that　crack　parameters,　rotational　speed　and　mounting　angle　have　significant　effects　on　the　intrinsic　properties　as　well　as　responses　of　rotating　composite　laminated　structures.　©　2024　SPIE.