Abstract: Based on the oases landscape of deserts, and starting from following 6 aspects：relatively advantageous natural condition and distribution of resources, ancient' Silk Road' and new' Eurasian land Bridge', mutual promoting effect between towns and countrysides interference, the paper analysed main points of forming and developing mechanism of oases-model town-system, and concluded the aridity-characterized features of oases model town-system, and the long-range spacial feature of its distribution along the oases basin and Eurasian land Bridge.