his project aims at investigating characteristics and physical properties of cassava stem charcoal which was prepared by annealing the cassava stem at 300 ºC for 30 minutes under an atmospheric condition. Charcoal properties, namely, the volume of fixed carbon, porosity, density, water and methylene blue (MB) adsorption abilities were assessed using various techniques. Results from energy dispersive spectroscopy (EDS) analysis indicated that percentage of fixed carbon content increased from 55.32 % to 66.10 % after annealing. Examination of the charcoal under a scanning electron microscope (SEM) at 500x magnification showed that pore shape was roughly rectangular and rather consistent both in shape and size. The average length of the pore was about 150 µm. The density of cassava stem charcoal was about 0.013 g/cm2 and water adsorption ability was about 21.009 g/g of charcoal weight. The methylene blue adsorption efficiency of charcoal was investigated by determining the MB remained in aqueous solution using a spectrophotometer by measuring the absorbance at 665 nm. Percentage of MB removal and the amounts of MB adsorbed per gram of charcoal were determined. It was found that the cassava stem charcoal exhibited about 50% removal efficiency. The amount of MB adsorbed was 2.984 mg/g charcoal.