The utility model provides a sectional type steel reinforcement cage machining mould, the on -line screen storage device comprises a base, be fixed in the first mould main part of base, first mould main part is equipped with the interior cavity configuration of the ascending arc of opening, the both ends of mould body can be dismantled with the one end for the 2nd zigzag type steel sheet mould ofconvex structure and the 3rd zigzag type steel sheet mould respectively and are connected, the connection can be dismantled to the other end of the 2nd zigzag type steel sheet mould and the 3rd zigzagtype steel sheet mould, first mould main part, after splicing each other, the 2nd zigzag type steel sheet mould and the 3rd zigzag type steel sheet mould form complete circular structure, the convexintracavity lateral wall of first mould main part evenly is equipped with the sawtooth, the outer wall of the 2nd zigzag type steel sheet mould and the 3rd zigzag type steel sheet mould evenly is equipped with the sawtooth, forms the draw -in groove that is used for placing main muscle between the adjacent sawtooth. The utility model discloses can satisfy the processingquality requirement under the condition of accelerating the steel reinforcement cage machining progress, reduce the input of construction operator person and equipment, reduce the steel reinforcement cage machining cost.