Raw biomass contained low energy and high moisture content which contributed to its limitation as energy source. However, the biomass properties can be improved via torrefaction method. Torrefaction is a biomass pretreatment method that is performed between 200-300 °C using slow heating rate in an inert condition. In this study, Leucaena Leucocephala (Leucaena) was torrefied in a fixed-bed reactor at 20 °C/min from 200-300 °C at holding times of 20 min. The changes in the elemental and chemical properties of Leucaena were studied using a few methods of analysis such as proximate, elemental analysis and fourier transform infrared (FTIR) spectrophotometer. When the torrefaction temperature was increased from 200 to 300 °C, the oxygen to carbon (O/C) and hydrogen to carbon (H/C) ratio of torrefied Leucaena reduced significantly. From FTIR, the broad peak at wavenumber of approximately 3400 cm−1 due to the presence of OH group reduced in its intensity upon increasing torrefaction temperature from 200 to 300 °C which indicated that the degree of hydrophobicity of torrefied Leucaena had improved.