The Routine-Based Interview is a promising method to collect information in Early Intervention, since it focuses on all members of the family and their routines, while seeking to highlight what parents consider a priority in the intervention. For that reason, in this paper, we aim to analyse the kind of benefits and difficulties that may be found in the Routine-Based Interview's implementation process. The present research comprises the qualitative interview method, according to which semi-structured interviews were carried out by eight Portuguese professionals enrolled in the Portuguese System for Early Intervention. The professionals highlight the benefits of the Routine-Based Interview as a way to clearly and objectively evaluate and identify the concerns and priorities of the family, as well as the child's competencies and the functional goals that will be included in the intervention plan. All participants stress the need for more training in the Routine-Based Interview process.