Background: Liver disease leads to complex pathophysiological injuries that affect digestion, absorption, distribution, storage and use of food. The effect that chronic liver disease has on the nutritional status and health of the child is determined by the cause and severity of liver disease and the age of onset of liver disease. As liver disease progresses, so do the symptoms and complications of the disease. The aim of this study was to determine the effect of specific nutrition adjustment program on specific liver findings in children with chronic liver disease.Methods: In this clinical trial study, 75 children with chronic liver disease were randomly divided into two groups (45 in the intervention group and 30 in the control group). At the beginning of the study, the necessary experiments were taken from two groups. The intervention group received a nutritional adjustment program during 6 sessions of the workshop. After 12 weeks of follow-up, bilirubin level (total, direct), albumin level, PT, INR, transaminases (AST, ALT) were measured in both groups. Data analysis was performed using SPSS software version 16 and Wilcoxon and Mann-Whitney tests.Results: At the beginning of the study, both groups were homogeneous in terms of demographic variables. In the post-intervention stage compared to the pre-intervention stage in the intervention group, the mean scores of prothrombin time (P = 0/040), albumin (P = 0/007), aspartate transaminase and alanine transaminase (p˂0/001)were statistically significant:. But the mean score of total bilirubin (P = 0/063) in the post-intervention stage compared to before the intervention in the intervention group was not statistically significant.Conclusion: Nutrition education and encouragement of patients with chronic liver disease to follow a special diet can be an important factor in feeling healthy and preventing the progression of the disease.Trial registration: Name of registry: Zahra NamjouIRCT registration number: IRCT2015091424019N1 Registration date: 2016-01-30 Registration timing: retrospective