To introduce the overview of the application of web-based patient decision aid tools in clinical decision-making for oncology patients,expounds its design elements,including content-rich and information presentation visualization, decision setting perso-nalization, functional interactivity, and clinical sustainability. We summarized the specific applications of the tools in clinical decision-making for oncology patients, including decision-making for cancer screening, decision-making for cancer prevention, decision-making for cancer treatment, decision-making for cancer patient fertility, and decision-making for advance care planning,and puts forward the challenges and suggestions for the type of tools′ clinical application. Aiming to provide a feasible reference for the development and application of web-based decision aid tools for cancer patients in China.