The utility model provides an it once becomes stake drill bit to spout solid stake of stirring anchor soon, including the drill bit sleeve pipe, drill bit sleeve pipe lower extreme is fixed to set up the drill bit blade, still includes a circular shape anchor board, be equipped with the centre bore in the middle of the anchor board the periphery of centre bore evenly sets up a plurality of prestressing tendons anchorage holes along the centre bore hoop, the anchor board passes through centre bore activity cartridge and is in on the drill bit sleeve pipe, the upper limiting plate that welds above the anchor board of drill bit sleeve pipe.