The present invention discloses a floor drain for same floor drainage. It includes the following several portions: grilled cover plate, filtering screen, drainage funnel, O-type sealing ring and floor drain body. It is characterized by that the described floor drain body is a hollow body tray structure, the front end of its top portion is equipped with a water inlet, the described grilled cover plate, filtering screen, drainage funnel and O-type sealing ring are successively cover-mounted on said water inlet, the tail end of said floor drain body is equipped with a water outlet, and said water outlet is connected with a U-trap pipe set in piping shaft of same floor. |