Since Permian period the sedimentry beds of the Karakorum region had welldeveloped. The Permian deposits overlaped on the Proterozoic metamorphic rocks,which are composed of elastic rocks, siliceous argillite and carbonate rocks withlight metamorphic slate and pabble-bearing slate as the represent atives. Some times with intercalations of cafe-clkaline island-arc volcanics in certain area. Theybelong to the sedimentary factes of typical shallow-water continental shelf, bathyalecontinental shelf margin and island-arc basin including the Gondwana cold-water deposition factes.From Triassic to Jurassic the sedimentary beds were mainly composed of elastic, fine-grained elastic and carbonate rocks. But the siliceous rocks also occurredin some localized area. With the exception for a Lower Triassic thick series ofrolastic rocks and siliceous argillite formation of gravity flow deposition with typi’cal flysch marks, which may belong to the outer continental shelf bathyal factes, tthe principal part was composed of fine-grained detrital rock-carbonate rock formation of shallow marine continental shelf sedimentary factes. All of them are con’sidered as the sedimentary series of stable continuous thalassogenic formation.An abrupt change of sedimentary factes did not happened until the end of Jurassic in the Karakorum region. Thick continental red coarseclastic rocks of molas.se sedimentary factes were altimately formed in early Cretaceous thus stoping thecontinued marine sedimentary history lasting for 1.5 handred million years.The big and sudden change of sedimentary factes after a stable continued deposition obviously resulted from the Yanshan movement being the product of platecollision along the second suture zone. Therefore, this is the most important geological event during the evolution of the region authentically recording the historyof the change and development of the region.