The Tertiary Yinggehai basin was formed on the Pale-Red River fault zone, trending NW. Tectonism in the Late Tertiary triggered massive hot fluid explosion from overpressure compartment, which resulted in the regular distribution of mud and fluid activities. Based on comparability theory and systematic analysis of the evolution and regional stress field of the basin, the stress field in the Late Tertiary was simulated. It was confirmed that the structure style of the basin was controlled by the pull-apart effect of the dextral strike-slip Red River fault and the tectonic activities in the Late Tertiary led to the en echelon faults and diapirs.