The utility model discloses a high-purity and high-cleanliness semiconductor electrolytic polishing stainless steel tube. The pipe comprises a pipe body, a spiral steel groove is wound on the outer wall of the pipe body; a reinforcing steel bar is arranged in the spiral steel groove; wherein the pipe body is a cylindrical pipe body with a cavity structure; a plurality of reinforcing ribs penetratethrough the cavity structure in the circle center direction of the cavity structure. A damp-proof pipe body extends from the inner wall of the pipe body to the circle center of the pipe body, internal threads are arranged on the inner wall of the pipe body, external threads are arranged on the outer wall of the damp-proof pipe body, the pipe body and the damp-proof pipe body are fastened throughthe matched external threads and internal threads, the damp-proof pipe body is of a cavity structure, and a cavity of the damp-proof pipe body is filled with damp-proof silicon rubber. The middle of the inner wall of the damp-proof pipe body extends towards the two ends of the damp-proof pipe body to form lengthened pipes, the middle of the inner wall of the damp-proof pipe body extends towards the two ends of the damp-proof pipe body to form internal threads, the outer walls of the lengthened pipes are provided with external threads matched with the internal threads, and the lengthened pipesand the damp-proof pipe body are fastened through matching between the external threads and the internal threads. According to the utility model, the working efficiency is improved, the operation of workers is facilitated, the service life of the product is prolonged, the stainless steel pipe is integrally compact, and the space waste is reduced.