Provided are a touch display panel and a method for preparing the touch display panel. The touch display panel includes a base substrate, a display substrate disposed on the base substrate, and a touch substrate disposed on the display substrate, wherein the display substrate comprises a plurality of pixel units arranged in a matrix, the pixel units each comprise a plurality of sub-pixels, the touch substrate comprises a touch electrode layer, the touch electrode layer comprises a plurality of hollow regions, and an orthographic projection of a hollow region on the base substrate contains an orthographic projection of at least one sub-pixel or at least one pixel unit on the base substrate.