The closed peritoneal dialysis three bag system relates to an integrated closed peritoneal dialysis three bag system which is used for the dialysis of patients with chronic renal failure. The present invention eliminates the chance of contamination /infection of life threatening peritonitis infection to the patient as it is a closed system eliminates the use of spikes to connect the system and which also eliminates the reuse of system or part thereof and can be used for both automated peritoneal dialysis as well as manual continuous ambulatory peritoneal dialysis. It is safe, user-friendly and eliminates the chances of contamination/ infection thereby minimizing the chances of life threat to the patient due to peritonitis. Figure 1