Adopt to get empty the area back to fall ground and underground water level in peripheral districts variety circumstance for certain new bridge peat and it to the influence that agriculture produce, the Toyota peat company more the west divides the company in 04 years, March at return to fill the setting water levels in ground and peripheral districtses to account, the fixed-point settle measurese the underground water level, collect 60068 of the water level data totally. This report changes to the dynamic state inside the of year of underground water level in analyzing the foundation of the original data and it makes an evaluation to the influence that agriculture produce.