Abstract: The invention relates to a self-drilling wall plug (1) for screwing into lightweight building materials, in particular into plaster walls, having a sleeve-shaped plug body (4) surrounded by a cutting thread (2), a flange (6) on the rear side, at least one cutting tooth (18, 20) like a milling tool in the region of its front end (10) comprising a tip (12), an inner profile formed along an inner wall (30) by a plurality of longitudinal ribs (32), into which the thread of a fixing element cuts, and in its flange (6) a recess (28) for engaging a driving tool, wherein a cup (38) for receiving the front end (10) of a fixing element penetrating the wall plug (1) is provided in the region of the tip (12).