Reformation of soft soil and system therefor

A system and a method for draining soft soil A bordered with soil B are disclosed. The system includes an airtight sheet which covers the soft soil A to assist in vacuuming the soft soil A. The system further includes water gathering pipes and a water drain tank to receive water from the water gathering pipes The water gathering pipes and the water drain tank provide water passages and air passages separately so as to expedite the drainage operation.