Childhood AGE is associated with a twofold risk of urolithiasis in a hospitalized cohort, but the absolute risk is low. Our study shows that AGE-related urolithiasis occurs through a variety of pathogens, and the outcomes of patients are favorable, which is in contrast to previous reports. What is Known: • There are several sporadic reports of pediatric urolithiasis associated with acute gastroenteritis (AGE), predominantly from Japan. • The epidemiology of AGE-related urolithiasis is however unclear. What is New: • AGE is associated with a two-fold risk of urolithiasis in a hospitalized cohort, with its absolute risk of 3.7 cases/10,000 AGE admissions.