Changes of chemical properties by times of the reclaimed tidal land soils and soil surface water, underground infiltration water with precipitation-runoff on natural meteological condition in the unripened tidal reclaimed paddy fields were investigated. This study was carried out to use environment-friendly farm land in the reclaimed tidal lands. The soils used in this study were saline-alkaline soils with the high Na+ and Mg++ content. As the results of investigation outflow loading of nutriments through outflow water in the unripened tidal reclaimed paddy fields by precipitation during the survey period, nutriments equivalent to T-N 1~2 kg 10a -1 and T-P 0.01~0.02 kg 10a-1 from in the unripened tidal lands were discharged. Besides, the results of comparison losses of cation through outflow water showed Na+> K+> Mg++ > Ca++, and the highest appeared water discharge of Na+. In case of saemangeum reclaimed tidal land soils water discharge of cations showed Ca++ 1.3 kg 10a-1, Mg++ 1.6 kg 10a-1, Na+ 17.7 kg 10a-1, and K+ 3.2 kg 10a-1 respectively. On the other hand, in case of koheung reclaimed tidal lands soils water discharge of cations showed Ca++ 18.1 kg 10a-1, Mg++ 31.2 kg 10a-1, Na+ 320.8 kg 10a-1 and K+ 51.2 kg 10a-1 respectively.