A shell nosing strip of floor plane interface belongs to a special profile linking floor plane interfaces, which comprises a substructure and a panel. The arc panel has a little elasticity and anti-skid teeth, a latch with spinibarbus is provided on the bottom of the intermediate panel. A notch with barb is provided on the substructure. The spinibarbus of the latch is in accord with the barb of the notch, the latch is not easy to pull out when inserted in the notch. For the spinibarbus of the latch on the panel and the barb of the notch on the substructure, the panel is compacter by increasingly pressure and will not loose when the panel is combined with the substructure, the arc panel with elasticity is good cohesion with the plane floor. The shell nosing strip of floor plane interface has the advantages of simple structure and especially good decorative effect.