In order to meet the requirements of reducing processing energy consumption,recycling waste polymers and making use of renewable resources in polymer industry,this paper proposes and investigates a elongation rheology-based polymer deformation processing method and a corresponding technology based on the vibration-shear deformation processing method and equipment,focusing on the plasticating and conveying process,technical characteristics and mixing characteristics of the vane extruder dominated by tensile deformation. It is found that,as compared with the conventional screw plasticating and conveying technology and equipment,the new technology and its equipment show many outstanding advantages,such as shorter thermo-mechanical history,lower energy consumption,better mixing effects,wider material adaptability and higher product quality; and that it has a significant advantage in processing material systems,such as multiphase and multicomponent composites,polymer /biomass composites,etc.