The invention discloses a cushion block for a steel wire mesh or a steel wire mesh frame. The cushion block comprises a shoulder plate and a bottom plate which can be inserted into a square mesh hole of the steel wire mesh or the steel wire mesh frame, wherein the bottom plate is provided with vertical plates which are arranged along the diagonal lines of the mesh hole and connect the bottom plate with the shoulder plate into a whole; the external surface of the shoulder plate is provided with a positioning block; each vertical plate is provided with a steel wire clamping groove in the opening direction consistent with the transverse direction of the vertical plate; the bottom plate is in a square shape identical to that of the mesh hole; a through hole is formed at the central position of the bottom plate; the shoulder plate is provided with a bolt through hole opposite to the through hole; the bottom plate is provided with an annular through hole and a bolt through hole and four vertical plates which are arranged along the diagonal lines of the bottom plate; the diameter of the bolt through hole is greater than that of the through hole; the external surface of the shoulder plateis provided with a protruding column; the external surface of the protruding column is provided with threads; and a bolt channel communicated with the bolt through hole is formed in the protruding column. The cushion block has a simple structure, provides convenience for connecting a pouring template, can limit the steel wire mesh of the pouring template, and ensures the thickness uniformity of concrete on the two sides of the steel wire mesh, and construction efficiency is high.