The invention relates to an overflowing dyeing machine which comprises a main machine body, a dye liquor nozzle arranged at one end of the main machine body and a routing pipe, wherein the routing pipe consists of a vertical pipe part connected with the dye liquor nozzle, an elbow pipe part connected with the other end part of the main machine body and a straight pipe part connecting the vertical pipe part with the elbow pipe part; and the vertical pipe part and the elbow pipe part are vertically arranged, and the straight pipe part is horizontally arranged. The overflowing dyeing machine is characterized in that the cross section of the vertical pipe part is square, and the cross section of the elbow pipe part is circular. According to the overflowing dyeing machine, the pipe is designed to be square, and the square pipe can effectively avoid the generation of high swirl, and can prevent fabric from being wound and reduce the friction between the pipeline and the fabric, so that the dyeing evenness can be guaranteed, and the dyeing chemical mark can be avoided.