Objective To explore the current situation and influencing factors of inadequate support in patients with systemic lupus erythematosus （SLE）.Methods A convenient sampling method was used to select 236 SLE patients, and the general information questionnaire, the Chinese version of theProblematic Support Scale (PSS), the Family Assessment Device (FAD), the Acceptance and Action Questionnaire (AAQ-Ⅱ), and the Personal Mastery Scale (PMS) were used for investigation.Results The total score of inadequate support in 236 SLE patients was (45.36±5.57).Inadequate support was positively correlated with family function and psychological flexibility, and negatively correlated with personal mastery (all P＜0.05); multiple linear regression analysis showed that whether relatives had a medical background, the degree of attention relatives paid to the disease, family function, psychological flexibility, and personal mastery were the influencing factors of inadequate support in SLE patients (all P＜0.05).Conclusion SLE patients have a moderately high level of inadequate support; clinical medical staff should pay attention to high-risk patients with low family function, low psychological flexibility, and low personal mastery levels, and take targeted measures to reduce the situation of inadequate support in SLE patients.