What is pediatric nutcracker syndrome like? In order to popularize the knowledge of pediatric nutcracker syndrome, today we have invited experts to explain the following: Nutcracker syndrome is also known as left renal vein compression syndrome) or nutcracker phenomenon. The disease can be seen in children and adults, the age of onset in children is mostly 7^-13 years old, with the majority of males. In recent years, with the development of diagnostic techniques, the incidence of nutcracker phenomenon is on the rise, and the clinical manifestations of the disease are mostly hematuria and proteinuria. According to statistics, pediatric nutcracker hematuria accounts for 33.30o of children’s hematuria, becoming a more common cause of hematuria in children, and therefore is receiving increasing attention from pediatricians in various countries, and its diagnosis and treatment are also of great concern to doctors and patients.