Objectives: (1) To describe the situation of antibiotic use for diarrhea treatment and (2) to determine factors that affected on indication of antibiotic for pediatric inpatient under 15 years at Kien Giang General Hospital in 2019.Subjects and methods: A cross-sectional study on 251 medical records of pediatric inpatients who treated by one of any drug from 01/2019 to 12/2019.