The present study aims to challenge primary school science teachers' beliefs about education and teaching efficacy, as well as their teaching practices, through a video-case-based intervention programme in a Chinese educational setting. A total of 46 in-service teachers were involved in this study (experimental group = 23, control group = 23). Pre- and post-intervention surveys were administered to examine possible changes in the participants' beliefs about education and science teaching efficacy. Video data were gathered through classroom observations of 9 participants from the experimental group and 9 participants from the control group. The results of one-way analysis of covariance indicate that the reported post-intervention beliefs of teachers who participated in the programme differed significantly from their pre-intervention beliefs. More specifically, teachers in the experimental groups reported fewer traditional and more constructivist beliefs after the intervention, as well as stronger personal science teaching efficacy beliefs. One exception included beliefs about science teaching outcome expectancy. The video data showed that teaching practices became more constructivist in terms of both practical activities and student ICT use. (Contains 5 tables and 2 figures.)