The Melut Basin is an important petroliferous rift basin in Africa, and a large number of structural hydrocarbon accumulations have been discovered in it. In this paper, Rock-Eval 6 instrument was used as the main apparatus to achieve the objectives of this study. The general objective of this study is to characterize the petroleum source rock in the Melut Basin based on geochemical data. Geochemical parameters obtained from rock-eval 6 analysis was presented. The samples have been evaluated using geochemical analysis. Following the temperature program and taking into account all measurement and assumptions, S1, S2, S3, TOM, TOC, HI, OI, PP, and Tmax has been measured and calculated in this study. Other parameters include organic carbon content and source rock maturity are evaluated with various factors including quantity and quality of organic matter, petroleum potential, type of organic matter and thermal maturation were considered. For all the selected settings, 5 samples were collected from the Galhak formation, 4 from Al Gagyer and 4 from Melut formations. From all the selected samples, sample TNP011 have shown a considerable richness in total organic matter (TOC), which is 3.24wt.% indicating a very good rate for petroleum potential. The maturation possibility of these sequences is ranging between 423-436â„ƒ as indicated by the Tmax values. Most of the above have shown immature, early and post maturities. For post, maturity samples are mentioned for sample TPW012 as its value equals 448â„ƒ. The lowest Tmax value equals 423â„ƒ for sample AMF013 which show an immature level. The criterion for determining kerogen type (quality) is usually depending on the value of the hydrogen index. The overall results show that the source rock quality range from fair to very good hydrocarbon potential stage, with kerogen confined, is encompassed into Type II that has the capability of generating oil and limited gas. Location-1 and location-2 samples have shown poor pair quantity of source rocks. Mostly, gas can be produced in these locations which correspond to type III kerogen. Type III kerogen is known for producing gas. The quality of kerogen in this study is ranging from kerogen type II, III and IV. Type IV kerogen cannot produce oil or gas. Oil and gas are produced from type II and Type III respectively. In this thesis work, the geochemical results have shown that S1 values are lower than S2 values in each source rock sample, which might be interpreted as hydrocarbons migrated out of the investigated source rocks into the traps system.