Doba, Bongor and Lake Chad basins in Chad are intra-continental rifted basins, which were formed by the dextral strike-slip stress field along the Central African Shear Zone during Mesozoic-Cenozoic times, related to the opening of the Central，Equatorial and South Atlantic oceans. The boreholes exposed that numerous Mesozoic-Cenozoic basalts had erupted within these basins which are poorly documented. A detailed chronology using K-Ar and Ar-Ar methods can recognise at least two periods magmatic activity in the study areas: (1) 95-75Ma, occurring only in Doba basin; (2) 66-52Ma, well expressed in Bongor basin and Lake Chad basin. Mesozoic- Cenozoic Volcanism in Chad basins probably is products of intraplate extensional stress regime, corresponded to the tectonic setting of the whole West and Central African during Cretaceous. Magmatism is closely correlated with rifting.