Introduction Peritoneal dialysis (PD) is still the most common modality used in treatment for children with End Stage Renal Disease (ESRD). The objective of this study was to identify the epidemiological, clinical, and microbiological factors affecting the outcome of PD. Methods In this study, we retrospectively reviewed the records of 85 patients who were treated with DP for the last ten years (from January 2004 to December 2013) in the Department of Pediatrics in Charles Nicolle hospital, Tunis. Results The mean duration of PD was 18.1±12 months (3.5-75 months). The average age of PD onset was 9.3±5.7 years (29 days-23 years). The sex ratio was 1.5. In a significant number of cases with ESRD, the primary cause is Congenital Anomalies of the Kidneys and Urinary Tract (CAKUT). Seventy-four of our patients (87%) had been treated with Automated PD. The average time between catheter placement and PD commencement was 3.9±4.6 days. Catheter change was 1.62 (1-5). Sixty-one patients (71.8%) had experienced at least one episode of peritonitis. The most frequently isolated organisms was the Gram-positive bacteria (61%). Survival rates without peritonitis at 12th, 24th and 36th months were 40%, 32% and 18%, respectively. Transition to permanent hemodialysis was required in 66% of patients. Conclusion Considering the important incidence of peritonitis in our patients, it is imperative to establish a targeted primary prevention.