This paper reports on a supervision project that aimed to enhance a child welfare agency staff’s professional competence in family-centred practice through a strength-based approach. A qualitative study was designed to explore the effectiveness and the change agents of the supervision. Purposive sampling was used. Two agency supervisors and two social workers participated the study voluntarily. The findings indicated that after the period of supervision, the staff had changed in three respects: their conceptualisation of the meaning of family work in the care context; their understanding of the importance of relationship-based interventions with families; and their development of alternative ways of practice. The agents of change from the supervision were the consultants’ modelling effect and the co-worker experience of the consultants and the social workers. This supervision approach can discern the synergistic effect of supervision on an agency’s routine supervision and balance the cultural beliefs in qing, yuan and ‘face’ embedded in the supervisory process.

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