A greenhouse pot experiment was conducted to evaluate the effect of Prosopis juliflora derived biochars on some properties of Salic Fluvisols collected from Melka werer area. Five rates of biochars (0, 2.5, 5.0, 7.5, and 12.5 t/ha) were arranged in a completely randomized design (CRD) with three replications. A total of 15 pots each containing 4 Kg of soil were laid out in greenhouse of Addis Ababa University Arat Kilo Campus. A 75 Kg of Salic Fluvisol with a pH of 9.05 , electrical conductivity(ECe ) of 9ds- m -1 and exchangeable sodium percentage (ESP) of 20.5 were treated with biochar for period of 2 months ( 6 March- 6 May /2015 ).The result indicated that biochar application has significantly ameliorated the sodicity and salinity of the soil . Organic carbon, CEC, Tot.N, avail. P and exchangeable cations levels have increased significantly. The highest value of chemical properties were recorded for the pots received the highest rate (i.e. 12.5 t/ha), which significantly decreased Exchangeable sodium percentage (ESP), pH and EC. The results suggest the possiblies of putting PJ shrub into a productive use which is currently causing severe rangeland degradation in the area. The result also suggest that biochar offers a cheap means of ameliorating saline/sodic soils which is a major problem for irrigated agriculture in the middle Awash KEY WORDS: Prosopis juliflora Biochar, Saline soil, Chemical and physical properties.