The purpose of this study is to evaluate the efficacy and safety of a 7.5% Icodextrin peritoneal dialysis solution for once-daily long dwell exchange in patients undergoing Continuous Ambulatory Peritoneal Dialysis (CAPD) in Chinese uremic patients.Patients were divided into Dianeal group or Extraneal group for long dwell time. Net ultrafiltration, small solute clearance and relationship between different transport group were used to evaluate efficacy of Icodextrin. Physical examination, vital signs and laboratory tests were used to evaluate safety of Icodextrin.