The invention discloses a method and a device for getting a social relationship chain, and belongs to the field of communication. The method comprises the following steps: getting a target user set and the mutual befriending information of any two target users in the target user set, wherein the target users in the target user set are friends of a center user, and the mutual befriending information is used to represent whether the two target users are friends to each other; building a benchmark network according to the center user and the mutual befriending information of any two target users in the target user set, wherein each node in the benchmark network is a target user in the target user set, and two target users befriending each other in the benchmark network have connected sides; and determining a target user sharing a parent-child relationship chain with the center user from the target user set according to the benchmark network. By using the method and the device, a parent-child relationship chain can be obtained.