Objective: Acute gastroenteritis (AGE) is a common infection of childhood. Our study aims to evaluate the clinical and laboratory parameters of children hospitalized with acute gastroenteritis. Material and method: One hundred thirty pediatric (aged 0-17 years) patients hospitalized at our clinic between January 2016 and January 2019 with a diagnosis of AGE, who experienced diarrhea for 14 days or shorter were included in our study. They were separated into two groups according to the agents: The patients with viral AGE and those with parasitic AGE. Patients' demographics, laboratory and clinical data were obtained from patients' files and statistical analyses were performed. Findings: Of the 130 patients included in the study, 47 were in the parasitic and 83 were in the viral AGE group. While there was no gender difference between the groups, the mean age was lower in the viral AGE group (p<0,001). The duration of diarrhea was longer and vomiting was more common in the viral AGE group (p=0,031, p=0,02, respectively). Parasitic AGE was seen mostly in summer and viral AGE was seen mostly during winter (p=0,01). The duration of diarrhea was found to be positively correlated with the length of hospital stay (p<0,001, r=0,656), but this duration was negatively correlated with mean platelet volume, neutrophil count and C-reactive protein (p=0,01, r=-0,21, p=0,02, r=-0,193, p=0,01, r=-0,209, respectively). Conclusions: We found that the length of stay, the duration of diarrhea were longer and the prevalence of vomiting was higher in viral gastroenteritis. Besides, we concluded that the number of viral cases was larger in winter while the incidence of parasitic cases was higher in summer and acute-phase markers were higher in the cases with the parasitic origin.