In recent years, significant efforts have been dedicated to the study of oil, gas, and geothermal resources in the Sanmenxia faulted basin. However, the genetic mechanism behind these resources remains insufficiently investigated, posing a constraint on effective exploration and exploitation of mineral resources. On the basis of previous research, this study conducts a comprehensive investigation of the Sanmenxia basin,integrating field geological surveyswith advanced geophysical exploration technologies such ashigh- precision deep reflections seismic profiling, magnetotelluric (MT), gravity, and magnetic methods. The findings reveal that the Sanmenxia basin is mainly composed of two negative flower- like structures, with the western structure being larger than the eastern one. The eastern boundaryof the basin is adjacent to the Luoyang depression and the Guanyintang uplift. The Guanyintang uplift exhibitsa lens- like low- velocity body within itsshell, whilelarge- scale hidden reverse faults are prevalent on the east and west sides of the uplift. The Moho surface in the study area is characterized by a detachment layer, approximately 5 km thick, displaying distinctive earthworm reflection characteristics on the deep reflection seismic profile, indicative of westwardmovement. Notably, several newlyidentified arc- shaped faults are observed in the upper and lower parts of the Moho detachment layer. The comprehensive study of geological and geophysical data shows that the decoupling of the Moho detachment layer is the main reason for the formation of the flower structure in the Sanmenxia fault depression basin. The interaction of different temporal and spatial tectonic forceshas led to the development of a Cenozoic floral tectonic basin, characterized by whole- crust rotation in the study area.