Abstract: Salt stratigraphic development is one of the main features in the Red Sea basin, which is characterized by coastal salt layer affection by proximal sediments, the mixed sediments of evaporates and sandstones/mudstones with the stratified shape. Due to salt’s fluidity and overlying unequal pressure, the salt layer was deformed, forming giant salt domes and swells and the content of evaporate is relatively higher. Four key technologies are applied for the salt layer’s velocity fine modeling in the salt basin region. The anomalous value’s elimination of stacking velocity spectrum ensures the accurate development of the velocity model. The split processing of salt layer with upper piercing formations guarantees the conterminous conformability of velocity and salt layer interfaces. The correction of pseudo?well computed velocity on the velocity model assures the rationality of the velocity field. The interval velocity forward simulation confirms the velocity model’s feasibility. Through the study and application of the salt region’s velocity modeling technology, the pre?salt structure reliability,trap scale and closure can be effectively identified, which are of great significance in the early stage of complex salt basin exploration