In this article, we reviewed properties of reclaimed tidal soil and fate of nitrogen in its soil. The results were summarized as followings. Most of the soil derived from the fluvio-marine deposit were silly textured soils. The EC of the Saemanguem soil were ranged from 14.7 to 33.9 dS $m^{-1}$, pH was 7.7. The organic matter content was low with 1.5 g $kg^{-1}$. The cation exchange capacity was 7.2 cmol $kg^{-1}$ and exchangeable sodium percent was high with range 45.1 % to 56.2%. High sodium concentration caused poor drainage. The salinity significantly affects efficiency of N fertilizer in reclaimed tidal soil.