The utility model discloses a rib steel sheet convenient to installation, including the umbrella stick, first annular cover, the two ring shaped cover, the rib, umbrella fulcra, discount and fastening body, the top fixed mounting of umbrella stick has the two ring shaped cover, two ring shaped sheathes in and installs the rib, first annular cover has been cup jointed on the umbrella stick, first annular is sheathe in and is installed umbrella fulcra, the rib passes through the discount and fastening body is connected with umbrella fulcra, the discount comprises discount piece and rand, the discount piece is installed at umbrella fulcra's top, the rand has been seted up on the discount piece, fastening body includes the lock piece, first backup pad, the second backup pad, auto -lock buckle mechanism and draw -in groove, the mid -mounting of rib has the lock piece, the top of lock piece corresponds both sides and installs first backup pad and second backup pad respectively, the draw -in groove has been seted up to one side of first backup pad, auto -lock buckle mechanism is installed to one side of second backup pad, this rib steel sheet, high durability and convenient use, connect stably, the maintenance degree of difficulty has been reduce greatly, the convenience of using has been promoted.