Objective To investigate the current status of self-regulatory fatigue in patients after hematopoietic stem cell transplantation(HSCT)and analyze its influencing factors.Methods From March 2022 to September 2023,convenience sampling was used to select 161 HSCT patients who were hospitalized and followed up in the Hematology Department of a Class Ⅲ Grade A hospital in Jinan City.A survey was conducted on patients using the General Information Questionnaire,Self-Regulatory Fatigue Scale(SRF-S),Perceived Social Support Scale,Connor and Davidson Resilience Scale,and Medical Coping Modes Questionnaire.Pearson correlation was used to analyze the correlation between self-regulatory fatigue and perceived social support,psychological resilience,and medical coping styles in patients after HSCT.Multiple linear regression was used to analyze the influencing factors of self-regulatory fatigue in patients after HSCT.Results A total of 161 questionnaires were distributed,and 156 valid questionnaires were collected,with an effective response rate of 96.89%(156/161).The total SRF-S score of 156 patients after HSCT was(49.06±6.62).Multiple linear regression analysis showed that the current work or life status,perceived social support,psychological resilience,avoidance and surrender coping styles were the influencing factors of self-regulatory fatigue in patients after HSCT(P<0.05).Conclusions After HSCT,patients generally experience self-regulatory fatigue,and psychological distress needs improvement.Medical and nursing staff should regularly evaluate the self-regulatory fatigue of patients and develop targeted intervention measures based on influencing factors to reduce the degree of self-regulatory fatigue of patients,improve their prognosis and psychological state.