The suitable groundwater level and soil water indexes for wheat are mainly discussed in this article, the groundwater level index was studied by the combined dynamic and static water level method, while the energy indexes of both waterlogging and drought-enduring soil water were got using the technique of soil water energy measurement. The suitable groundwater depth for wheat was 0.8 meter during the whole growing season; if it's drought during plantin;, the depth shoued be raised to 0.5 meter for the full emergence of seedlings; during the period of after tilling to the end of feberuary the depth should be cut down to 0.8 meter progressively; and during the middle and later growing periods of wheat (March-May), the depth should be controled at 0.8 meter 3-4 days after rainfuli. During the midelie and later growing pericds of wheat, the waterlogging enduring soil water index was the water suction of >3kPa in the 40cm soil horizon; and the droughtenduring soil water index was the suction of ≤ 100kPa in the 40cm soil horizon at booting-heading and flowering stages. The aeration porosities for creating a good aeration status of soils could be 8-15% in plowed layer ≥ 4% in plow sole, and ≥5% in B-horizon. In the heavy loam soil area of Kunshan, the pipe drainage with a pipe depth of 15 meter and a distance of 15 meters could meet the needs of all indexes mentioned above.