Since January 2025, over 70,000 refugees from the Democratic Republic of Congo (DRC) have sought protection in Burundi, with children representing 53% of this population. This unprecedented influx causes serious humanitarian challenges, including around mental health and psychosocial wellbeing. This assessment was conducted by UNHCR and partners between July and September 2025 in Gitara transit centre and Musenyi refugee site. It aimed to identify key needs for mental health and psychosocial support (MHPSS), barriers to accessing care, and actionable strategies for integrating MHPSS into the emergency response. The assessment collected data from Congolese refugees through 591 household interviews, 24 focus group discussions, and 21 key informant interviews.