The systemic, ecological, family-centered approach (FCA) has been shown to be the most effective approach to follow worldwide. In Spain, however, the expert-centered approach remains in force and determines the actions of professionals. The objective of this study is to present the training needs perceived by professionals in six early intervention (EI) centers in Spain in which a research process was introduced, namely, the FCA. Two focus groups were held. The needs stated by professionals were for more knowledge about the philosophy of the approach: supervision, learning in reference centers, and exchange sessions with families as the most appropriate training methods; the observation of role models; collaboration between professionals and the trainer as effective instructional designs; and organizational aspects such as training within the work day. A discussion of the results is carried out in the context of current literature and the practical implications are explored.