The invention discloses a method for preventing electrostatic dust collection explosion venting in the converter double-slag smelting process. The method includes the steps that when lance carrying deslagging is carried out for the first time in the converter smelting process, an oxygen lance is carried to a fire hole for nitrogen flushing, and as for the volume contents of gases in a dust remover, nitrogen flushing is stopped after O2 is smaller than or equal to 6% and CO is smaller than or equal to 9%. According to the method, by optimizing the primary slagging gas supply system, the converter oxygen lance is used for nitrogen flushing, the volume content of O2 entering the electrostatic field dust remover after converting is stopped is controlled to be 6% or below, the explosion conditions of a gas mixture of CO and O2 are effectively evaded, and therefore explosion venting of the electrostatic field dust remover in converter double-slag operation can be avoided, and the effects ofstabilizing the converter production rhythm, reducing the damage to dust removing equipment and prolonging the service life are achieved. Meanwhile, the double-slag operation is adopted in a converter, P controllability of the converter is improved and the volume production needs of high-end branded steel are met.