The invention relates to a variable-distance wall reinforcing steel bar laying device. The variable-distance wall reinforcing steel bar laying device comprises a lifting support, a driving assembly and a plurality of supporting arm groups, wherein the driving assembly drives the lifting support to move in the up-down direction; the supporting arm groups are fixedly arranged on the same side surface of the lifting support and are distributed at intervals in the longitudinal direction; and each supporting arm group comprises more than two reinforcing steel bar shelving arms which are positioned on the same height and are arranged at intervals. The invention aims to provide the variable-distance wall reinforcing steel bar laying device, construction quality and efficiency of binding of wall reinforcing steel bars can be improved effectively, and labor cost is saved. The variable-distance wall reinforcing steel bar laying device has the advantages that the reinforcing steel bar shelving arms are elongated arc-shaped pieces with upward openings, transverse reinforcing steel bars can be automatically attached tightly and positioned, operation is convenient and speedy, and time and labor are saved. The lifting support is a shear fork type structure, height equal dividing can be carried out according to vertical reinforcing steel bars with different heights, so that the reinforcing steel bar shelving arms are positioned at equally divided height positions, manual measurement positioning is omitted, and reasonability of binding of the reinforcing steel bars is guaranteed.