A hollow slab model was set up to carry out the force analysis oncastinsitu concretehollow slabby using ANSYS finite element software.The differences of shear obtained by formula oftechnical specification for castinsitu concrete hollow floor structure and finite element analysiswerecompared.The results showed that the shear of hollow slab floor was similar with general flexuralmembers.The formula of technical specification for castinsitu concrete hollow floor structurecould be applied in the hollow plate shear design.