Residents of orphanages frequently experience infections and fevers, suffer from skin diseases, face bullying, struggle with social confidence, and have lower academic achievements. The quasi-experimental approach used is a one-group pretest and posttest design. The sample includes 225 children from orphanages and 70 administrators and caregivers in orphanages Riau Province.The pretest results show that more than half of the caregivers and administrators in the orphanage have low knowledge (70%) regarding orphanage management. Additionally, more than half of the orphanage residents have low knowledge (64%) about basic nursing care, low knowledge (67%) about basic life support, low knowledge (62%) about personal hygiene, and low knowledge (69%) about clean and healthy living behaviors. The pretest data shows that more than half of the residents in the orphanage had a lower quality of life (71%) when the pretest was conducted. The data shows that the majority of the residents in the orphanage had a good quality of life (84%) when the posttest was conducted. The posttest results show that more than half of the caregivers and administrators in the orphanage have high knowledge (80%) regarding orphanage management. Additionally, more than half of the orphanage residents have high knowledge (47%) about basic nursing care, high knowledge (51%) about basic life support, high knowledge (52%) about personal hygiene, and high knowledge (51%) about clean and healthy living behaviors. Furthermore, the orphanage has successfully established a health unit to handle basic healthcare services for its residents. Based on the Wilcoxon test, it was found that the intervention of training and mentoring on health management and its determining factors was highly effective in improving the quality of life in the orphanage, with a Pvalue of 0.014.

Keywords : Health Management ; Orphanages ; Quality Of