The invention discloses a method and system for prevention and treatment of burst leakage of a roof pipe of a DG2060/17.6-II1 type boiler. The method comprises the following steps that various steam bypass pipes, connected with a roof superheater inlet collection box, of the DG2060/17.6-II1 type boiler and adjacent saturated steam outlet pipes on the center side of the boiler are disconnected with a collection box connecting pipe base on the roof superheater inlet collection box and are cut to be shorter, then the disconnected and cutoff steam bypass pipes and the adjacent saturated steam outlet pipes are connected with each other through first elbow pipes and second elbow pipes, the improved steam process is formed, a flat end cover is additionally installed on the disconnected collection box connecting pipe base, and finally first branch hanging brackets and second branch hanging brackets are additionally installed on the first elbow pipes and the steam bypass pipes. The method and system can effectively achieve prevention and treatment of burst leakage of the roof pipe of the DG2060/17.6-II1 type boiler.