Children with malignant neoplasms are a high-risk group for developing nutritional and metabolic disorders, which are one of the key disabling factors that significantly reduce the effectiveness of medical and social rehabilitation. Dynamic monitoring, screening, and timely correction of identified problems, including nutritional ones, constitute an essential precondition for the success of rehabilitation. The basic principles of nutritional correction in pediatric oncology include the following: a personalized approach; avoidance of long intervals between meals; prescription of any restrictive diets only for reasonable indications; multidisciplinarity; sparing of the gastrointestinal tract; timely initiation of nutritional support; continuity, dynamic monitoring, and control of nutritional status. The aim of this study is to describe the main aspects of nutritional support in children with malignant neoplasms after the end of cancer treatment. Key words: children, nutritional support, oncology, nutrition, cancer