Stunting is a chronic nutrition problem that impairs child growth, remains a major issue in Indonesia, including the Parongpong Health Center area, West Bandung. Maternal knowledge of healthy food is key to proper nutritional care in familie. This study aims to determine the quality of mothers’ knowledge about healthy food in efforts to prevent stunting. The method used is descriptive qualitative with data analysis based on the Miles and Huberman model. Involving eight mothers with children aged 0–5 years selected through convenience sampling. Results show that most mothers understand healthy food components, preparation, and benefits for child development. However, applying this knowledge is often hindered by financial limitations, low creativity in meal preparation, and children’s picky eating habits. Additionally, educational background, access to information, and social environment influence knowledge quality and behavior. To support stunting prevention, ongoing education through posyandu activities, reliable social media content, and practical training for mothers is recommended to strengthen healthy feeding practices.