Provided are a method and apparatus for configuring dual-connectivity by a terminal, The method may include: performing configuration by adding a secondary base station signaling radio bearer (SRB); receiving a radio resource control (RRC) message including radio resource configuration information associated with a secondary base station or a secondary cell group through the secondary base station SRB; and transmitting a failure information message to a master base station when it is not possible to comply with the radio resource configuration information included in the RRC message.