Steel plate formwork for narrow deformation joint

The utility model discloses a narrow deformation joint steel plate formwork which comprises a narrow deformation joint and a steel plate. The two steel plates are arranged on the two sides of the narrow deformation joint correspondingly. A drill hole is formed in the steel plate; split bolts are arranged in the drill holes; one end of the split bolt is fixed on the wall surface, and the other end of the split bolt penetrates through the drill hole; a nut is arranged on the split bolt; the nut is arranged at one end far away from the wall surface; an inverted U-shaped groove is formed in the edge of the bottom of the steel plate; a cross arm steel bar is arranged below the steel plate; the cross arm steel bars are arranged corresponding to the inverted U-shaped grooves; and the cross arm steel bars are movably embedded in the inverted U-shaped grooves. The device is high in assembly and disassembly speed, light in weight, very convenient to turn over, compact and simple in structure, convenient in material tak