Objective Previous work has largely discussed the relations between sediment structures and accumulation of gas hydrates in the Shenhu area of South China Sea,but has not documented why the gas hydrates occurred at the seafloor topographic highs.Many gas hydrate exploration examples abroad also indicate that the saturation of gas Objective Previous work has substantially discussed the relations between sediment structures and accumulation of gas hydrates in the Shenhu area of ​​South China Sea, but has not yet occurred why the gas hydrates occurred at the seafloor topographic highs.Many gas hydrate exploration examples abroad also indicate that the saturation of gas