Aim: Appendicitis is the most common cause of acute abdomen faced by pediatric surgeons and general surgeons. Early diagnosis and treatment are very important in appendicitis. There are numerous articles on appendicitis. There are numerous articles about appendicitis; however, studies comparing pediatric and adult appendicitis are very rarely. The aim of this study is to compare the laboratory and clinical features of appendicitis in child and adult patient groups. Methods: The study consists of patients were diagnosed with appendicitis as a result of pathology. The patients were divided into two groups as acute appendicitis and perforated appendicitis. In addition, both groups were divided into two groups as under 18 years old and over. Demographic characteristics, laboratory values, cost analysis, surgical method, pathology reports, appendix diameters, complaints and hospitalization times of the patients in the groups were evaluated retrospectively. Results: Of the 150 patients included in the study, 42 were pediatric patients. Acute appendicitis was detected in 131 patients and perforated appendicitis in 29 patients. The mean age was 9.38±2.25 years in children and 36.33±13.54 years in adults. In the study, a significant difference was found in the acute appendicitis groups in terms of gender, surgical technique, white blood cell (WBC), time of hospitalization, and cost analysis although there was no significant difference in terms of complaint duration, appendix diameter, C-reactive protein (CRP), and percentage of neutrophils. There was no significant difference between all parameters in the perforated appendicitis groups. Conclusion: Although there are important differences between pediatric and adult acute appendicitis patients; no differences were found in perforated appendicitis. We believe that this condition should be taken into account by clinicians during the evaluation of patients.