The utility model provides a back-off-free rotary tail pipe feeding tool, and relates to the field of natural gas exploration and development. The tool comprises a central pipe and a tail pipe connecting cylinder, wherein the tail pipe connecting cylinder is nested on the central pipe through a connecting ball device; the connecting ball device comprises an ejector rod arranged in the tail pipe connecting cylinder, a connecting ball and a ball seat arranged in the center pipe, and in the first state, the connecting ball is installed between the ball seat and the ejector rod. The ball seat in the central pipe shears off the shear pin through well mouth pitching pressure building, and the ball seat and the ejector rod move to deviate from the connecting ball, so that the tail pipe connectingcylinder is separated from the central pipe, and the purpose of feeding the tail pipe is achieved. The casing running of the tail pipe can be safely and smoothly realized, the smooth running of the cementing operation of the tail pipe is ensured, after the tail pipe string is run to the bottom of a well, a well mouth ball is thrown to build up pressure and release, the rotary tail pipe can be smoothly sent without reversing, and the realization method is reliable; the simple structural design is easy to process, and the production and manufacturing cost is reduced.