The analysis about the Cretaceous and Paleogene paleomagnetic data, the tectonic characteristic and the GPS monitoring of the southeast edge of Tibet Plateau indicates the Cenozoic crustal rotational deformation characteristics of Chuandian Terrane and the east part of Simao Terrane. Paleomagnetic analysis shows that since ~5Ma, the middle segment of Ailao-Red River Fault （ARF） experienced southward bending deformation with at least ~13.05mm/yr north to south average bending rate. The north to south average sinistral strike slip rate of Dien Bien Phu Fault （DBPF） was at least ~4.98mm/yr since ~5Ma, meanwhile, at least~6.2mm/yr west to east stretching deformation rate were estimated form the easternmost part of Simao Terrane. The paleomagnetic analysis is consistent with the GPS monitoring result, which shows that although the sinistral strike-slip movement of Xianshuihe-Xiaojiang Fault （XXF） does not cut off the ARF, the clockwise rotational extrusion movement of Chuandian Terrane induced the bending of middle segment of ARF, which absorb part of the slip rate of XXF, and finally result in the suddenly decrease of the sinistral slip rate from XXF to DBPF. In the Oligocene- Miocene time, the Shan-Thai Block experienced clockwise rotational extrusion movement along the Gaoligong-Sagaing Fault and the ARF, since ~5Ma, at least the northeast part of Shan-Thai Block and the Chuandian Terrane experienced second stage rotation deformation around the Eastern Himalaya Syntaxis, the XXF and DBPF constitutes the eastern boundary fault of the second stage rotation deformation system which experienced clockwise rotational deformation around the Eastern Himalaya Syntaxis.