The stratification of Quaternary sediments and the determination of neo-tectonism are of great significance in engineering geological exploration.Based on elaborate design, construction, data-processing as well as careful analysis and interpretation conducted at the construction site for exploration of a highway bridge spanning the Yellow River,the authors have gained satisfacto ry results in the precise stratification of Quaternary sediments and the deter mination of neotectonism, thus providing reliable scientific grounds for siting and designing of the railway bridge spanning the Yellow River at this cons truction site.