Objective To explore the shared decision-making style and the influencing factors among parents of children with cancer, so as to provide references for promoting the implementation of shared decision-making. Methods Descriptive qualitative research design was used in this study, and 15 parents of children with cancer were selected purposively for semi-structured interview.Content analysis was utilized to analyze the data. Results Two themes and five subthemes were extracted, including:the actual decision-making style （physician-led decision-making, or shared decision-making）; and factors influencing shared decision-making （parents′ own factors, medical environmental factors, and other external factors）. Conclusion Parent participation in shared decision-making for children with cancer is unsatisfactory.Medical staff should focus on parents′ willingness to participate in shared decision-making and provide targeted interventions, thus to meet communication and information needs of these parents.