The present study was conducted to investigate the effectiveness of child-centred play therapy on the moral intelligence and bullying of primary school students. The statistical population studied was all primary school students in Shahriar city. The sampling method was available and a counselling centre called the "Hal Khoob Andisheh” Centre was selected. During the first four months of 2019, a moral intelligence and bullying test was performed on 60 elementary school students who came to the centre for behavioural disorders related to the subject. 30 students were selected who received the lowest scores in the moral intelligence test and the highest scores in the bullying test. The 30 individuals were then randomly assigned to control and experiment with 2 groups of 15 individuals. Data collection tools included Michele Borba's Moral Intelligence Questionnaire (1950) and Ellie Noise's Bullying Questionnaire (2001). Then, 11 30-minute sessions of child-centred play therapy were performed on the target group (experiments) and at the end of the session, two groups of experiments and post-test control were performed and the results were analysed. Results at a significance level of 0.001 showed that child-centred play therapy had an effect on the moral intelligence and bullying of elementary students. پرونده مقاله