Objective To investigate the status quo of breast cancer patients′ self-compassion, analyze the influencing factors of breast cancer patients′ self-compassion, and to provide basis for medical staff to take targeted measures aiming at improving breast cancer patients′ self-compassion. Methods A total of 265 breast cancer patients in breast wards and outpatient clinic of four 3A hospitals in Shandong province were selected by convenient sampling method.The general information questionnaire, the Self-Compassion Scale, the Intimate Relationship Experience Scale-Short Form and the Perceived Social Support Scale were used for questionnaire survey. Results The total score of self-compassion in breast cancer patients was （79.33±12.40） points.The total score of self-compassion and scores of all dimensions were negatively correlated with attachment anxiety and attachment avoidance scores, but positively correlated with the total score of social support and scores of all dimensions （all P＜0.05）.Multiple stepwise regression analysis showed that age, education level, pathological stage, attachment anxiety and social support were predictors of self-compassion （all P＜0.05）, accounting for 50.8% of the total variation. Conclusion Breast cancer patients′ self-compassion is at an average level.Medical staff should carry out targeted intervention for breast cancer patients, so as to improve their self-sympathy level and enhance their positive psychological strength.