One　of　the　factors　in　the　participation　of　slab　reinforcement,　transverse　beam　stiffness,　is　stutied　in　this　paper.　Five　reinforced　concrete　frame　structure　models　with　different　transverse　beam　stiffness　are　simulated　in　finite　element　software　of　ABAQUS.　The　influence　extent　of　transverse　beam　stiffness　on　slab　reinforcement　participation　in　the　flexural　behavior　of　beam　end　is　investigated.　The　research　results　show　that:　the　existence　of　transverse　beam　influnces　the　participation　of　slab　reinforcement　in　the　flexural　behavior　of　beam　end　more　than　the　variety　of　transverse　beam　stiffness;　the　contribution　of　slab　reinforcment　in　the　flexural　behavior　of　beam　end　increases　with　the　increase　of　transverse　beam　stiffness,　but　not　with　linear　growth;　the　integrality　performance　of　frame　structure　with　high　transverse　beam　stiffness　is　better　than　that　with　lower　one,　moreover,　the　anchorage　of　slab　reinfocement　is　superior　to　the　lower　one.　The　slab　reinforcement　participation　in　the　flexural　behavior　of　beam　end　is　consequently　greater　than　the　lower　one.