The chapter describes the Purging Behaviours module of intensive CBT-E for eating disorders. Purging, including self-induced vomiting, laxative misuse, and diuretic misuse, is a common but harmful strategy used to compensate for food intake, control weight, or regulate emotions. These behaviours are medically dangerous, are ineffective for weight control, and maintain the eating disorder through cycles of secrecy, shame, and dysfunctional coping. The chapter outlines the clinical approach to managing purging: (i) assessing behaviours through self-report, clinical indicators, and empathetic inquiry; (ii) helping patients recognise purging as a problem by providing psychoeducation, reviewing handouts, and weighing pros and cons for stopping it; and (iii) guiding patients toward cessation. Strategies include incorporating purging into the personal formulation, monitoring urges in real-time, addressing emotional triggers, and using specific behavioural interventions such as delaying bathroom access after meals, tolerating urges and alternative behaviours, and surrendering laxatives/diuretics.