Background :The hemodynamic relationship between the heart and the kidneys is closely related. Cardiorenal syndrome in general can be defined as a condition of pathophysiological disorders of the heart and kidneys, in which acute or chronic dysfunction of one organ results in acute or chronic dysfunction of other organs.. The cardiorenal syndrome proceeds like an interconnected loop where heart failure can exacerbate chronic kidney failure and vice versa. Method : Research design analytic observational with cross sectional approach with the population is Chronic Kidney Failure (CKD) patients undergoing Hemodialysis (HD) program at North Lombok Hospital. Aim : The purpose of this study was to see if there was a relationship between the duration of hemodialysis in CKD patients and the incidence of congestive heart failure (CHD). Results : Statistical test results using Spearmen Test shows that from a total sample of 51 people, the correlation coefficient rof 0.446 and the value of Sig (p) = 0.001 (p <0.05). Based on these results, it can be concluded statistically that there is a significant relationship between the length of HD and the degree of HF based on the New York Heart Association (NYHA). Conclusion :There is a statistically significant relationship between the duration of HD and the degree of CHD based on the NYHA. The relationship is positive, which means that the longer the duration of HD, the higher the degree of NYHA in patients with CHD.