Using the newest acquired seismic and drilling data,combined with physical analogue modeling,the differences in structural characteristics and control factors of Yingxiong Range structural belt in the western Qaidam Basin were analyzed.The results indicate that Yingxiong Range structural belt of the western Qaidam Basin is characterized bythe westeast segmentation,the north-south zonation and the vertical stratification. The sedimentary period of the Eocene E32 xg was the key period of structure deformation...