A contrast of the longitudinal movement of the Himalayan terrain and the Qaidam block and the shortening amount between them since the Early Cretaceous shows that (T) The Himalayan terrain began to shift northward rapidly after the Early Cretaceous, and the shifting rate was greater than that of the Qaidam block. The total shortening amount between them since the Early Cretaceous reaches ca. 5522 km. (2) The longitudinal crust shortening amount between them is ca. 1364 km in total since the collision of the Indian with Asian continents at 50 Ma. The shortening amount supports the compression-shortening-thickening pattern of the Qinghai - Tibet Plateau uplift. (3) The slower northward shift of the Qaidam block since the Mesozoic shows that it has been subjected to the evolution of the Tethys. The evident difference in the shift rate between the Himalayan terrain and the Qaidam block indicates that the latter not only shifted northward synchronously with the former but also obstructed the northward shift of blocks to its south.