National stunting data in 2018 still reached 36%. Stunting not only threatens the quality of human resources as the nation’s next-generation but also harms socio-economically. The survey results show that one of the main factors influencing stunting is the mother’s attitude towards stunting. This study seeks to find a method to change maternal attitudes to stunting through the Interprofessional Collaboration (IPC) program. This study aims to determine the effectiveness of Interprofessional Collaboration on the attitudes of mothers and health cadres on stunting. The experimental research was conducted with a quasi-experimental design (quasi-experimental pre-test-post-test design) on 90 mothers with babies under two years of age. The treatment was in the form of an Interprofessional Collaboration program (doctors, nurses, midwives, nutritionists, and sanitarians) for three months. Data were analyzed by t-test. The results of data analysis showed that the average value of the mother’s attitude towards stunting changed from 9.68 to 16.52 (p=0.001), the attitude of cadres increased from 76.53 to 87.53 (p=0.001). Thus, Interprofessional Collaboration is effective in improving the attitude of mothers and health cadres on stunting.