Objective To explore the effect of marital family-based psychological intervention in SLE patients on family assessment device FAD and index of well-being. Methods A total of 62 SLE patients, aged between 15 and 58, who were treated in out-patient of endocrine immune rheumatism center of Dongguan Kanghua hospital from June 1,2012 to May 31,2014. The experimental group was made up of 30 patients who, at random, volunteered to participate in an added marital family-based psychological intervention and the control group was composed of rest 32 cases. At the time of pre-intervention,post-intervention,3 months and 6 months after intervention, both groups were investigated with questionnaires of family assessment device, index of well-being, index of general affect, and systemic lupus erythematosus disease activity index. The results were analyzed with repeated measure variance analysis to explore the effect. Results There were significant multiple-comparison differences by repeated measure variance analysis in the score of FAD's total and sub-scale problem solving, affective responsiveness, affective involvement, general functioning(P<0.05) between experimental and control group after intervention. There were no significant repeated measure variance analysis differences in the score of index of well-being' total, but if enlarging confidence space to P<0.1, there were partial multiple-comparison differences between experimental and control group at the time of 3 months and 6 months after intervention(P=0.08<0.1). Conclusion Marital family-based psychological intervention may significantly improve FAD's problem solving, affective responsiveness, affective involvement, general functioning, and sum of FAD, and partially improve index of well-being, but can not improve SLEDAI which had developed by psychosomatic disease.