Objective To investigate the current state of shared decision-making (SDM) in patients with ovarian cancer, to analyze the influencing factors, and to provide reference for targeted intervention. Methods Totally, 205 patients with ovarian cancer completed a demographic data questionnaire, the Chinese version of the Patient Participation in Decision Making Regarding Treatment and Nursing Care Research Questionnaire and the Decisional Conflict Scale. Results The total score of attitude of ovarian cancer patients to participation in treatment decision-making was (2.39±0.57) and the total score of decisional conflict was (34.23±5.79). Logistic analysis showed that age, first treatment and decisional conflict were factors affecting attitude to participation in treatment decision-making (all P<0.05). Conclusion Patients with ovarian cancer have a positive attitude to participation in SDM, and their decisional conflict is at moderate to high level. Medical staff should provide individualized guidance for patients according to the influencing factors, so as to reduce their decisional conflict and enhance their participation in SDM.