Seeds of Myrianthus arboreus P. Beauv were collected from from Didoko forest, at 140 km from Abidjan (Côte d‟Ivoire). One part of seeds (about 1 kg) was dried at sun (30-35°C) for a week (Dried Seeds, DS). A second part (1 kg), was boiled in water (100°C) for 30min (Boiled Seeds, BS). Oils were extracted using chloroform and methanol as solvent and the content in oil was determined by gravimetry. Physicochemical caractéristiques were determined using the méthodes of the American Oil Chemists Society. The total lipid contents of myrianthus arboreus seeds were 45.82±2.16 and 46.02±0.49; respectively for DS and BS. Physicochemical properties of these oils showed that acid values ; saponification and peroxide values and the iodine indices were 1,94±0.1 and 3,00±0.17 mg KOH/g ; 136,68 ± 0.32 mg KOH/g of oil and 148,36± 0.64 mg KOH/g of oil ; 5,49± 0.49 mEq/Kg and 5,6±0.10 mEq/Kg ; and 104,037±0.037 g I2/100g and 103.O42±0.042 g I2/100g respectively for DSO and BSO. The colours of myrianthus arboreus seeds oils were yelloworange for DSO and pale yellow for BSO respectively. The quality and stability of traditionally processed myrianthus arboreus seeds oil as affected by temperature were evaluated by analyzing their physicochemical properties which included acid, saponification, peroxide, and iodine indices.