The utility model discloses an electro-fusion pipe which comprises a pipe body. Two wiring terminals are arranged on the pipe body, a spiral heating wire is embedded in the pipe body, two ends of the heating wire are in one-to-one correspondence connection with the two wiring terminals respectively, and at least one temperature-change ink display article is coated on the outer surface of the pipe body. By means of the electro-fusion pipe, the welding quality can be determined accurately and visually.