The objective of the study was to assess the situation of drug use in the treatment of diarrhea in children at Tay Ninh General Hospital in 2020. A descriptive and retrospective study was conducted on 78 medical records from hospital treatment from June 1, 2020 to December 1, 2020. The results recorded that the rate of antibiotic use in the sample was 37,2%. The indication of antibiotics in the treatment of diarrhea with liquid and bloody stools is 100%, while for watery stools is 15,5%. The administration of antibiotics in acute diarrhea with bloody stools and prolonged diarrhea is 100%, and in acute diarrhea is 33,8%. The antibiotic most used in the study was cefixime 34,6%. In the treatment of diarrhea, the sample mean was 3,66±1,61 days, while the median was 3 days, treatment lasted for a minimum of 2 days and a maximum of 8 days. The rate of prescribed antibiotic regimens with the recommended appropriate dose accounted for 35,9%, the lower-recommended dose regimen was 1,3%. Indications for oresol: for the treatment of diarrhea the sample was 25,6%. Indications for lactate ringer: in the treatment of diarrhea without dehydration, accounted for 25,4%. Dosage of oresol: according to the recommendations of WHO and the Ministry of Health, the recommended relevance in the study is 21,8% and lower than the recommendation of 3,8%, the rest is not indicated oresol. Only 9% of the samples with zinc supplementation indicated diarrhea, and 11,8% indicated diarrhea with mucus. The appropriateness of the recommended dose of zinc supplements in the treatment of diarrhea accounts for 85,7%. Bloody diarrhea with bloody stools assigned to probiotic supplementation accounted for 100% of cases.