Using 0.44 dtex superfine viscose fiber,conventional polyester fiber and conventional viscose fiber as raw materials,polyester/viscose/superfine viscose 64/16/20 and polyester/viscose/superfine viscose 48/12/40 jet vortex blended yarns are developed by jet vortex spinning process,and the structure,properties and application of the two are analyzed.The test results show that the air-jet vortex blended yarn has soft handle,good moisture absorption and certain strength.It is considered that it is feasible to develop flexible jet vortex blended yarn based on superfine viscose fiber.