Background, Stunting is a growth disorder that may indicate abnormalities in various organs, including the brain. The brain is a vital neural center that significantly influences a child’s ability to see, hear, think, and perform motor functions. Prolonged nutritional deficiencies can cause permanent brain function impairment. Furthermore, children who experience stunting are more susceptible to illness, decreased cognitive abilities, lower academic performance, and even disability in old age. Objective, To determine the effect of psychoeducation using the CILUKBA method on the role of Posyandu cadres in stunting prevention efforts. Method, This research employed a pre-experimental one-group pre-test and post-test design conducted in Dauh Puri Kaja Village, under the jurisdiction of Public Health Center (Puskesmas) III North Denpasar. The subjects were 36 Posyandu cadres in Wanasari Hamlet, Dauh Puri Kaja Village. Data were collected using a questionnaire and analyzed with the Wilcoxon test. Results, Before the intervention, 19 respondents (52.8%) had a moderate level of knowledge, 30 respondents (83.3%) showed a moderate attitude, and 27 respondents (75%) demonstrated moderate practices. After the intervention, 30 respondents (83.3%) had a good level of knowledge, 29 respondents (90%) demonstrated a good attitude, and 29 respondents (80.6%) had good practices. The Wilcoxon statistical test showed a p-value = 0.000 < α (0.05), thus Ho is rejected and Ha is accepted. This indicates that the psychoeducation using the CILUKBA method significantly influences the knowledge, attitude, and practices of Posyandu cadres in stunting prevention efforts. Conclusion, Psychoeducation using the CILUKBA method has a significant effect on improving the knowledge, attitude, and practices of Posyandu cadres in efforts to prevent stunting.