Conservative cancer treatment is mainly the best supportive treatment for patients with advanced cancer, who are in poor general condition, have more underlying diseases, and cannot tolerate systemic anti-tumor therapy and multiple lines of treatment afterwards. The purpose of treatment is to control patients’ symptoms and improve the quality of life. The specific treatment method is different according to different symptoms. For patients with pain, pain medications can be applied for pain control. For patients with gastrointestinal tumor, if the nutritional status is poor, the nutritional status can be improved by oral nutrition solution and intravenous nutrition support treatment. If the patient has intestinal obstruction, palliative enterostomy can be considered. For patients with lung tumor, if there are symptoms of suffocation, shortness of breath, cough and sputum, treatment of antispasmodic, asthma and sputum can be performed. In conclusion, conservative treatment mainly controls the symptoms and does not prolong the survival of patients.