The Mongol invasion of Central Asia occurred after the unification of the Mongol and Turkic tribes on the Mongolian plateau in 1206. It was finally complete when Genghis Khan conquered the Khwarizmian Empire in 1221.

Ironically, it was not the intention to invade Corasmia that motivated the conquest. Genghis Khan sent messengers to Emperor Mohamed II of Corasmia, with a message greeting him as his equal. The unification of the Mongolian tribes and other ethnic groups of nomads under the command of Genghis had been carried out relatively small bloodshed. Even the invasion of China had not caused many more deaths compared to the campaigns carried out so far.