The utility model discloses a disconnectable frame beam two-row rib fixing device which comprises a reinforcing steel bar, stirrups are arranged on the outer edge of the reinforcing steel bar, wrapping ribs are arranged on the front side, the middle side and the rear side of the reinforcing steel bar, right-angle bending points are arranged on the two sides of each wrapping rib in a bent mode, andfirst bent-angle bending points are arranged on the two ends of each wrapping rib in a bent mode. V-shaped cutting grooves are formed in the middle sides of the transverse positions of the wrapping ribs in a left-right beveling mode through a cutting machine. V-shaped structure, the two sides of the wrapping rib are conveniently pulled back and forth by hands; the wrapping rib can be convenientlybroken into left and right sections; when the steel bar left-right span is greater than the left-right span in the wrapping bar; the wrapping rib divided into two sections can still be put into use;the inclined ribs can be matched with the wrapping ribs to be divided into two sections to be separated, so that the binding effect is firm, the reinforcing steel bars are very stable in the concretevibrating process, and the problem that the binding stability is affected due to the fact that the reinforcing steel bars are prone to deviating in the concrete vibrating process is solved compared with the mode that stirrups are bound directly through binding wires to surround and fix peripheral reinforcing steel bars.