To strengthen academic exchanges among medical institutions at all levels, improve the standardized diagnosis and treatment of clinical physicians, and enhance the diagnosis and treatment level of oncology diseases. The fourth series of academic practice seminars on clinical diagnosis and treatment of tumors in the western region, hosted by the Chengdu High tech Medical Association, was successfully held online on October 25, 2024. The meeting invited experts from western regions in oncology and related fields to give lectures, which covered a wide range of areas and was closer to clinical practice, with strong progressiveness, practicality and controllability. The attending representatives expressed that they have benefited greatly and hope to participate in more such conferences in the future.