This study examined the effects of cognitive behavioural therapy (CBT), mindful yoga and positive psychology interventions and identified common psychotherapeutic elements that exert critical treatment effects on Hong Kong Chinese students with special educational needs (SENs). Forty-seven participants received CBT intervention while 42 and 41 participants received mindful yoga and positive psychology interventions, respectively (N = 130). Mixed ANOVAs revealed no significant interaction effect between time and intervention condition on any outcome variables. However, within-subjects ANOVA revealed significant improvements in some dimensions within each intervention, including areas of behavioural problems, positive feelings and positive relationships. Changes in negative automatic thoughts were also found to lessen negative emotions in all three interventions. This study ascertained the differential effects of the selected approaches in ameliorating negative emotion, reducing behavioural problems and enhancing positive relationships among students with SENs in various treatment approaches. In addition, this study highlighted several common psychotherapeutic elements, which could potentially serve as important factors and constitute the formulation of an integrative psychotherapeutic framework for enhancing the well-being of students with SENs in Hong Kong. Finally, implications for practice and the possible development of an integrative intervention model were discussed.