To provide a complex tilling implement with which deteriorated soil is recovered, an excess moisture injury countermeasure can be taken and high ridges can be formed in a field having high ridges.

This complex tilling implement is characterized in that the implement is equipped with a bottom plow implement and an implement for tilling a furrow. The complex tilling implement grinds a hard layer of the furrow by the implement for tilling the furrow, throws soil, reverses the thrown soil when the bottom plow implement tills and reverses a high ridge part, returns deteriorated soil at the surface side of the high ridge to a new position inside a high ridge part and reverses rest soil left in the rest state of the high ridge to the surface side of the high ridge so as to regenerate a field.