The invention discloses a method and device for building a social contact group, and belongs to the technical field of the internet. The method comprises the steps that all accounts in social connection with a target account are determined, and social connection between all the accounts and attribute information of preset account attributes of all the accounts are determined; according to the attribute information of the preset account attributes of all the accounts, a corresponding relation between the attribute information and the accounts is built; according to the corresponding relation between the attribute information and the accounts and the social connection between all the accounts, at least one social contact group of the target account is determined among all the accounts. By the adoption of the method and device, efficiency of building the social contact group can be improved.