PD is an important issue in the management of renal failure. General objective is to assess nurse role pre, during and post peritoneal dialysis by diagnosis weak point and so suength. Specific objective: to assess nurse knowledge about PD, to assess nurse intervention toward occurrences of complication, to assess nurses skills pre, during and post PD. 47 questionnaires and 10 check lists used to collect data from qualified nurses with BSC degrees working not less than 4 months in PD units. Three areas were selected to conduct the study KTH, Soba university hospital and military hospital. Nurse knowledge about PD and it's complication range from 97.19% - 51.3%. Regarding practice of qualified nurses in PD, 60% explain the procedure to clients, 100% not weighting the client pre and post dialysis, 90% of nurses don't instruct pt to empty their bowel or bladder pre dialysis, 60% don't wear gowns, caps and masks, 90% don't warm dialysis fluid and 90% don't place antiseptic solution atthe pore of insertion, 90% fair in preparing dialysis in and out flow of dialysate 80% do not check vital signs every 30-60 minutes.