Background: The World Health Organization (WHO) has approved a protocol advocating for the inclusion of psychosocial stimulation in the management strategy to mitigate the lasting negative developmental effects of Severe Acute Malnutrition (SAM). Aims: To assess the impact of structured play therapy along with nutritional support on physical growth of children with SAM. Methods: This randomized controlled trial was carried out the in the Department of Pediatrics, Sir Salimullah Medical College Mitford Hospital (SSMC MH), Dhaka from June 2019 to June 2020. This study enrolled a total of 174 children with severe acute malnutrition (SAM) between 6 months to 59 months and randomly allocated to intervention group (n=87) and control group (n=87). Intervention group received structured play therapy as psychosocial stimulation along with standard treatment and control group received standard treatment along with psychosocial stimulation in conventional way. Growth outcomes were measured in both groups during admission and during follow up at 15 days, 1 month, 2 months and 3 months after discharge. Results: Intervention group achieved improvement compared to control group from baseline in terms of the WAZ, LAZ, WLZ and MUAC after 1st, 2nd and 3rd month follow up. Among 72 children of intervention group, 51(70.8%) were found to achieve improvement in term of MUAC, WAZ, LAZ/HAZ and WLZ/WHZ and remaining 21(29.2%) could not achieve improvement. Children who received family food (43.1%) followed by formula (38.9), breast milk (13.9%) and other food (4.2%). Conclusion: Children afflicted with SAM demonstrated notable improvements in achieving catch-up growth when provided with psychosocial stimulation through structured play therapy in conjunction with nutritional support.