Abstract: Objective To investigate the stages of the maintenance hemodialysis patients’volume control behavior and social support status,and to explore the influence of social support on patients’volume control behavior. Method Using TTM volume control behavior questionnaire and SSRS to investigate the volume control behavior and social support status of 104 MHB patients. Result 16% patients are in uncontemplation stage,10% patients are in contemplation stage ,19% patients are in preparation stage, 14% patients in action stage,40% patients are in maintenance stage. The score of social status is 36.35±10.67，the patients social status score are significant different in different stages (F=2.888 P＜0.05),and the marriage status also influence the volume control behaviors of patients(χ2=6.359，P＜0.01). Conclusion The social status of MHD patients has influence their volume control behavior, HD nurses should provide volume control interventions and support to the patients to maintain good volume status.

Key words: Maintenance hemodialysis, stages of change, health education