The invention discloses an auxiliary marking and positioning sticker for CT. The auxiliary marking and positioning sticker comprises an outer paper layer, a middle aluminum
wire grid and an inner
adhesive layer which are sequentially bonded and connected, wherein the middle aluminum
wire grid comprises four transverse aluminum wires and five longitudinal aluminum wires which are vertically fixed;grid lines corresponding to the middle aluminum
wire grid is arranged on the outer paper layer; grid-shaped cotton yarns corresponding to the middle aluminum wire grid are arranged on the face, away from the middle aluminum wire grid, of the inner
adhesive layer; and blue mercury marking liquid is attached to the grid-shaped cotton yarns. According to the invention, the sticker with a size of 4*3cm is designed, fits with the surface curvature of a
human body, can easily and tightly attach to the
body surface, and hardly generates wrinkles; an aluminum wire design is adopted, development is clear under CT, and artifacts are not generated; when a grid-like mark is attached to the
skin, the grid-like mark is printed on the
skin, and a marking pen does not need to be found for marking; splicing of the sticker can be carried out as required; and the sticker is particularly suitable for defining the pre-operation range of
craniotomy, positioning craniocerebral puncture points, searching
body surface foreign matters, positioning
body surface puncture points and the like.