After the soft soil horizon have been disposed through cement injection pile, they change into non-uniform plastic or Uneven layer of solid, so they form into the formation of a composite foundation due to the composition of soil structure have changed. This essay proves the advantage of short time and the well-reinforce-effect good quality assurance through the success of the use of cement injection pile in Ashen-expressway project of bridge section, high fill, culvert base treatment in Henan Province.