Dalian area has undergone a long and specific geological-structural evolutionary process. The study area has been the structural background of active continental margin since Mesozoic, and has suffered the influence of multideformation, in which the NS-trending shear traction deformation is the largest and most widespread in scale. This paper has determined the characteristics as well as the model and age of the deformation on the basis of geological investigation. The results obtained have enriched the research substance of Indosinian movement in Sino-Korean plate.