Encapsulating peritoneal sclerosis (EPS) is a rare but serious complication of peritoneal dialysis (PD) patients. The purpose of this study was to assess the clinical characteristics of patients with EPS to search for factors useful for EPS early diagnosis. This retrospective study was performed in a single dialysis center in Taiwan between August 1990 and April 2014. Overall, a total of 565 patients were included and the medical records of those patients who had developed EPS (EPS group) and those who had not developed EPS (control group) were collected. We compared several factors between these two groups. In the univariate analysis, EPS was significantly associated with a change of transport state (Δ2) (p = 0.007), duration of PD (p < 0.001), duration of peritonitis treatment (p = 0.001), number of peritonitis episodes (p = 0.002), and fungus related peritonitis (p = 0.031). After multivariate analysis, only the duration of PD was independently significantly associated with EPS (p = 0.034). We also found that duration of peritoneal dialysis of about 8.4 years is the best cut-off point to predict EPS occurrence by receiver operating characteristic curve.