The invention discloses a method for preventing explosion venting of a dry dedusting system of a catch carbon converter, belongs to the technical field of dry dedusting of converters, and is used for preventing the dry dedusting system of the catch carbon converter from generating the explosion venting accident. The oxygen flow and the nitrogen blowing amount in the catch carbon operation are controlled, and the oxygen blowing amount mode is controlled according to the catch carbon content in secondary gun reblowing, so that the xplosion venting of the dry dedusting system of the catch carbon converter can be effectively prevented, the safety production is realized, the operability of the converter is improved, the production cost is reduced, and the molten steel quality is enhanced. Under the conditions of the dry dedusting technology, the target of stably producing low alloys (HRB400 series) and high-carbon steels (40-80#, 77B, 82B and the like) by the converter catch carbon method is realized.