With the rapid development of the industry after the second world war,many industrial sites have been identified that the soil or the groundwater under the sites have been contaminated by those toxic substances used in the plants,and it is worried that these substances will threaten the health of the local people.In Japan,when the area was confirmed that has been contaminated,only complete remediation and physical containments of contaminated soil were accepted as permanent measures for many years,however,in February 2003,a new law -the "Soil Contamination Countermeasures Law" was released.In this law,a new concept of taking contaminant remediation actions based on the environmental risk was adopted.According to the concept,the piece of land that is contaminated by the hazardous substances will be designated as the "Designated Area",and continuous management will be required,only those sites which may cause human health damage will be requested to take "measures of contaminant removal,etc".However,the soil contamination is judged based on "Standard for the Designated Area" no matter how the land is or will be used.When there is possibility for people to access to the contaminated soil,no matter how much the real environmental risk is,remediation measures will be ordered.As the result,at industrial areas,it has been increasing that the lands where remediation is not completed or the sites where the soil is doubted to be contaminated,and these areas are being recognized as a brown-field problem in Japan nowadays.A case study was performed to research the more accurate risk assessment based on different land-use pattern and it is concluded that different future land-use has different potential risk to human health and contaminant remediation can be conducted based on both risk assessment and future land-use.