Understanding service providers ' perceptions of family-centred care (FCC) is essential to improve the processes and outcomes of children's services in early intervention. A systematic review and meta-analysis of the research on the Measure of Processes of Care-Service Provider (MPOC-SP) were performed to determine the extent service-providers of children with developmental disabilities perceive while they provided FCC. A comprehensive literature search was conducted on three databases. A total of 446 studies were retrieved, and 14 met the criteria of the current research. Meta-analysis for 2,094 service-providers of children with developmental disabilities that were included in 14 studies was conducted based on the four scales of the MPOC-SP. The aggregated means of the four factors of the MPOC-SP, showing interpersonal sensitivity, providing general information, communicating specific information, and treating people respectfully, is from 4.26 to 5.77. The result shows that treating people respectfully has the highest score while providing general information has the lowest one. Service providers are encouraged to focus on children's and their families' needs for general information. Further research on better understanding inter-professional service providers' perspectives of providing family-centred care and engaging professionals in intervention processes are recommended.