ObjectiveThis survey was conducted to get some knowledge about the growth status and intestinal microecology of pediatric liver transplantation patients. MethodsA total of 30 children’s stool sample were collected, the samples were analyzed by gene sequencing. Meanwhile, the clinical data and personal information were included into analysis. ResultsThe average month age was (6.1±1.5)m. The average height, weight and body mass index (BMI) were (65.8±3.7)cm, (6.7±1.1)kg and 15.1±1.6, respectively. As for the gender, 10 cases were men while 20 cases were women. The most common blood type was A which accounted for 33.3%, followed by B(23.3%), O(30.0%) and AB(13.4%). There were statistical differences between normal and abnormal groups in weight, BMI, weight Z score and BMI Z score on the operation day. However, 18 months after operation, there were statistical differences betweentwo groups in height and weight. ConclusionLiver transplantation can improve the growth of biliary atresia patients, and intestinal flora correlates to growth.