Objective:To explore the status of volume management behavior in patients with peritoneal dialysis, and to explore the relationship between health belief and volume management behavior.Methods:Convenient sampling was used to select 129 patients who underwent regular dialysis in the peritoneal dialysis center of the General Hospital of Ningxia Medical University from January to December 2019. The general condition questionnaire, Health Belief Scale, and Capacity Management Behavior Scale for patients with peritoneal dialysis were used.Results:The total score of the Capacity Management Behavior Scale of peritoneal dialysis patients was 20.23±3.54. Among all the entries: "Weigh and record the infusion volume and drainage volume" and "Regular monitoring of renal function and electrolytes and other related examinations as directed by the doctor" scored higher; while the item "Eat less high-salt and high-sodium food and adjust fluid intake according to the amount of ultrafiltration, edema and urine output" item scored lower; single factor analysis found that different educational levels, different employment conditions, whether had diabetes mellius and different over hydration had statistical significance ( F value was 3.911, t values were 2.409, 4.990, 6.070, P<0.05). The dimension of the perception maintenance capacity balance disorder was negatively correlated with the total score and each dimension of the capacity management behavior( r values were -0.243, -0.260, -0.299, P<0.05) , and the liquid intake self-efficacy dimension is positively correlated with the total score and each dimension of the capacity management behavior ( r values were 0.329, 0.397, 0.393, P<0.05). Conclusions:The level of capacity management behavior of peritoneal dialysis patients needs to be improved; employment status, and whether he has diabetes or not are the influencing factors of the patients' capacity management behavior; in health beliefs, perception of maintenance of volume balance disorders and self-efficacy and peritoneal dialysis are correlated with patients' capacity management behaviors.