The utility model provides a wide blade umbellate form anchor anchor head of axial symmetry formula, including the main part connecting rod, the bottom of main part connecting rod is equipped with the cushion cap, and two left and right anchor slabs are the symmetry rotation through the anchor slab pivot respectively and set up on the main part connecting rod, and the anchor slab design is the ARC blade structure, and the anchor slab pivot is located cushion cap upper portion, loop is installed to the lower part of cushion cap, and loop's bottom processing is the base, install the slip support disc that can freely slide on the base on loop, the upper end of vaulting pole is rotated with the anchor slab and is connected, and the vaulting pole lower extreme rotates with slip support disc to be connected. The utility model discloses the anchor slab is because anchor slab design is the ARC blade structure, downthehole draw the in -process can cut into the soil layer fast in and open rapidly, great anchor slab stress surface has again, the drilling back is direct puts into desired depth with the anchor head, can carry out stretch -draw at the top, the soil body is cut into to the anchor slab, produces anchor power, the size of anchor power mainly depends on the compressive property of the soil body, therefore construction process is simple, simple structure, work efficiency are fast.