Cancer belongs to the category of cancer in Chinese medicine, and Cordyceps is effective in relieving the symptoms of advanced cancer. Cordyceps has the function of tonifying the kidney and benefiting the lung, stopping bleeding and resolving phlegm, and can be used in the treatment of kidney deficiency, impotence and spermatorrhea, lumbar and knee pain, prolonged coughing and wheezing, and hemoptysis due to exertion. Patients with advanced cancer may suffer from lung and kidney deficiency, so the use of Cordyceps has certain curative effects. However, due to the complexity of the etiology and pathogenesis of advanced cancer, there may be qi stagnation, phlegm coagulation, dampness stagnation, stagnation of blood, toxicity, and other pathological reactions intertwined with each other, and there may be both lung and kidney deficiencies, heart and spleen deficiencies (weakness of the heart and the spleen) and other deficiencies of the internal organs. Therefore, the effect of using Cordyceps alone is limited. Cordyceps should be used under the guidance of a doctor. People with advanced cancer are advised to consult regular hospitals in time for diagnosis and treatment by professional doctors.