Abstract: Accurate feeder-transformer connectivity in distribution network is the key to dispatching, maintenance and planning, etc. Aiming at the problem of high error rate of manual maintenance of feeder-transformer connectivity, a feeder-transformer connectivity identification and correction method in distribution network considering time synchronization is proposed. First, the adaptive time window sliding method is used to modify the sampling clock of distribution transformer to improve the accuracy of feeder-transformer connectivity index. Second, the threshold is calculated according to the cumulative distribution probability information of feeder-transformer connectivity index to screen out the suspected distribution transformer. Then, the possible feeder set is found out combined with the longitude and latitude information. Finally, the feeder is identified based on the clustering correction method. The accuracy of the proposed identification method is verified by an actual case.