The invention discloses a spiral power conveying device, and belongs to the technical field of spiral feeding. The spiral power conveying device is characterized in that a conveying pipe and a plurality of spiral conveying rings (4) are included, wherein the multiple spiral conveying rings (4) are coaxially mounted; flowing air directions of the multiple spiral conveying rings (4) are the same, and gaps are reserved between the multiple spiral conveying rings (4); the conveying pipe sleeves the spiral conveying rings (4), and spiral seams (5) are formed in pipe bodies (401) of the spiral conveying rings (4) in the axial direction; and one or more communicating openings are formed between the spiral conveying rings (4) and a communicating cavity (3) in the conveying pipe. The 'stirring-blade-free' concept is adopted, the spiral air direction is formed through the spiral conveying rings, thus forward propelling force is gradually formed, materials, especially wet materials, can be subjected to high-quality conveying without the need for paddle blades, in the conveying process, the essence and state of the materials can be ensured to the largest extent, and extruding or condition damage to the materials is avoided.