One of the management methods used in arid and semi-arid areas to remove salts from irrigated lands into the fallow lands is dry drainage. In dry drainage, due to salts movement from irrigated area to the fallow land, it is important to study soil salinity changes with time. In many areas due to lake of irrigation water, the drainage outflow is used for irrigation. This study was carried out using a dry drainage laboratory model to simulate and study salts movement and salt leaching from irrigated field to the fallow land for condition of constant water table. The physical model was designed using steel, having 200 cm length, 100 cm height and 50 cm wide. The model was divided into two sections of irrigation area and the fallow land. The soil texture used in the model was loam. The irrigation water was obtained by diluting the drain waters of Khuzestan Agro Industry Company, to test the effect of reusing drainage water on solute traort in dry drainage. The model was studied for soil salinities of 3 and 7 dS/m, irrigation water salinities of 5 and 15 dS/m, ground water salinities of 1 and 3 dS/m and water table of 50 cm from soil surface. After each experiment, soil salinity, sodium, calcium and magnesium concentratios in the soil solution for both irrigated area and fallow land were measured and the spatial distributions of salinity, sodium, calcium and magnesium concentrations were plotted. The results showed that under dry drainage salt leaching from irrigated area to the fallow land occrued. As the irrigation water salinity increased, the leaching of sodium from irrigated area into the fallow land increased. For irrigation water salinity of 5 dS/m, the salinity of removed salt from surface of fallow land after 49 days from start of the experiment was 86.7 dS/m, and the sodium concentration was 340 meq/l. For irrigation water salinity of 15 dS/m, the salinity of removed salt from surface of fallow land after 49 days from start of the experiment was 146.7 dS/m, and the sodium concentration was 800 meq/l. The results of simulating dry drainage using the laboratory model, showed that in dry drainage solutes can be easily transfered from irrigated area to the fallow land, which the result is better soil conditions for the irrigated area. Keywords: Dry drainage, Fallow land, Salt leaching, Solute concentration, Drainage water, Water table.