Cancer often produces a range of local and systemic clinical symptoms, either directly or indirectly. The common symptoms of cancer patients are pain, weakness, nausea, vomiting, loss of appetite, anorexia, difficulty in eating, constipation, diarrhea, cough, wheezing, difficulty in breathing, insomnia, depression, anxiety, dry mouth, mouth ulcers, itchy skin, bed sores, venous thrombosis, emaciation, weight loss, and general failure. Some patients can relieve their symptoms through anti-cancer treatment, but it takes some time; other patients cannot relieve their symptoms even after long anti-cancer treatment. No matter which type of patients, if the symptoms caused by cancer are not effectively controlled for a long time, their quality of life will definitely be seriously disturbed, which will make them lose their confidence to continue anti-cancer treatment and also further deepen their fear of cancer. Therefore, it is necessary to provide active symptomatic treatment for the symptoms of cancer. In fact, although “treating the head when it hurts and treating the foot when it hurts” cannot cure the disease, it is one of the important strategies in clinical medicine, and this symptomatic treatment strategy is especially important for patients with advanced cancer.