This article highlights the factors and historical conditions that motivated the creation of Sogdian trading settlements, the role of Sogdian settlements in Sogdian relations with East Turkestan and China, Sogdian trade priorities in relations with East Turkestan and China. In addition, the following issues are considered: the historical foundations of relations between Sogd and China, the location of the Sogds in China and East urkestan, the general characteristics of trade relations in the Sogd settlements of East Turkestan, trade and political relations between Sogd and China, the question of the location of the Sogd settlements on a scientific basis. in a relationship.