The invention provides an ODN logic topology information acquisition method and device, equipment and a storage medium. The method comprises the following steps: obtaining identification information of each first ONU with a changed optical path under the first PON port and feature data in a first time window, wherein the feature data comprises at least one of received optical power and an alarm event; acquiring the feature data of each first ONU according to the feature data of each first ONU; obtaining a feature vector corresponding to each first ONU, and clustering analysis is performed on the feature vector corresponding to each first ONU, topology information corresponding to the first PON port is acquired, the topology information comprises at least one group of identification information of the first ONUs, and the identification information of each group of first ONUs is used for indicating that the first ONUs in the group are hooked under the same non-primary optical splitter. The topological information of the ONU is obtained through feature analysis of the ONU, the method is simple and rapid, the obtained topological information is accurate, and the topological informationof the optical splitter does not need to be maintained through manual input.