Objective To observe intermittent Peritoneal dialysis (PD) treatment for severe congestive heart failure and its beneficial effect on heart. Methods 14 severe congestive failure patients were treated by PD and their left ventricular myocardial mass index (LVMI) PD ago and after PD treatment for 1 month were calculated by the way of ultra cardiography. Results These patients' heart function were significantly improved after PD treatment；The mortality of 0.5 years, 1 yeares, 1.5 years and 2 years were respective 87%, 57%, 57% and 7%；LVMI were significantly decreased after PD treatment for 1 month.［(239±56)g/m2 vs (189±39)g/m2 P<0.01］. Conclusion PD can effectively treated severe congestive heart failure and improved heart function and decreased the myocardial mass.