The invention discloses a joint outage judging method based on marketing and distribution fusion. The method comprises the steps that S1, according to the real-time operation condition of a distribution network, high, medium and low voltage full network topology models are established; S2, a repair work order which is uploaded in real time is acquired; according to the repair work order, fault information is acquired; combined with high, medium and low voltage full network topology models, upstream and downstream topological analysis is carried out on the fault information to determine whether the fault information is within the influence scope of planned outage; and if so, outage information is stored, otherwise step S3 is carried out; and S3, the fault type of the fault information is judged to acquire detailed outage information and the information of an outage event library; through similarity comparison, whether the fault information meets a work order merging condition is determined; and if so, work order merging is carried out, otherwise the fault type and the detailed outage information are stored in the outage event library to form a new repair work order. According to the method, the received repair work order is merged to reduce repeated order sending, so that the repair efficiency is improved.