To enhance academic exchanges among medical institutions at all levels and improve the standardized diagnosis and treatment capabilities of clinicians in oncology, the Fourth Session of the Comprehensive Diagnosis and Treatment of Malignant Tumors Series Conference, hosted by the Chengdu High-Tech Medical Association, was successfully held online on July 29, 2025. The conference invited experts in oncology and related fields from across the province to deliver lectures. The content covered a wide range of topics, closely aligned with clinical practice, and demonstrated strong progressiveness, practicality, and operability, making it highly valuable for grassroots clinicians to learn from.