Is there any other treatment needed for early-stage cancer besides radical treatment, is it still curable in the middle and late stages, and can terminal patients only suffer from the pain and pain, and suffer worse than death? In 2002, the World Health Organization defined palliative medicine as a clinical discipline that prevents and relieves physical and mental suffering through early identification, active assessment, pain management and treatment of other distressing symptoms, including physical, psychosocial and religious (spiritual) distress, in order to improve the quality of life of patients and their loved ones facing life-threatening diseases. In 2005, WHO also changed the three tasks of oncology from “tumor prevention, early diagnosis, and early treatment” to “tumor prevention, early diagnosis, comprehensive treatment, and palliative care”, which shows that palliative care is very important, and it is integrated throughout the treatment. This shows that palliative care is very important, and it is always a part of the treatment. Cancer treatment is divided into three stages, namely, early stage, try to cure; middle and late stage, control and delay the progress of the disease, prolong the life of the patient; end stage, eliminate, relieve the patient’s pain and improve the quality of life, no matter which stage is inseparable from palliative care. Take early radical treatment as an example, when patients or family members are informed of cancer, most of them will have such a psychological process as doubt, denial, fear, anxiety, acceptance and cooperation, and they are eager to know the severity of the disease, how to treat it, how effective it is, the side effects, the size of the damage, etc. They may even avoid the disease, seek medical help blindly, and treat it hastily, thus delaying the disease and losing the opportunity to regret, and at this time, they urgently need clear answers, guidance, comfort and support from doctors. At this time, there is an urgent need for doctors’ clear answers, guidance, comfort and support; preoperative and postoperative life care, psychological care, symptomatic treatment, nutritional support, etc. Well, the content of palliative medicine has been integrated. For patients in the middle and late stages, through the progress of contemporary science and technology, the treatment techniques are getting better and better, such as palliative radiotherapy, chemotherapy, surgery, interventional therapy, targeted therapy, deep heat therapy, biological therapy, etc., which can kill most of the tumor cells, reduce the tumor load or stall the growth of tumor cells to slow down the progress of the disease and survive with tumor. In the past, once liver cancer was diagnosed, it was rare for most patients to survive more than two to three months and six months, but nowadays, it is common for patients to survive three to five years after standardized treatment, which is no longer rare. Even at the end stage, patients no longer have to bear the pain with sticks or table corners, sweat profusely and sleep through the night, as they did in the past. Through palliative care, patients and their families can feel better, their symptoms can be reduced, and their mental, dietary and physical strength can be improved, so is it beneficial to improve the effectiveness of treatment, relieve patients’ pain and improve their quality of life? “Palliative medicine” is not a new word, but it is not easy to fully elaborate and truly comprehensive, and it can also cause misunderstanding and resistance. Open the Chinese dictionary “palliative” word explanation: “unprincipled accommodation, indulgence, unrestricted”, it is easy to make people and “appeasement to raise adultery” associated; ” Palliative Medicine” in English is: “Palliative Medicine”, “Palliative” (palliative) from the Latin word Pallium, which means Palliative” is derived from the Latin word “pallium”, meaning “large shawl”, which means a cloak, a covering that provides shelter, protection. For example, in the case of anesthesia for surgery, where injury and pain are objectively present but not felt by the patient, or in the case of a warm and comfortable heated house in the middle of winter when it is freezing cold, palliative medicine is the “house” that provides protection and shelter from the wind and rain. Its fundamental purpose is to help patients to be comfortable and pain-free. Palliative medicine is not isolated, it is just a part of the whole comprehensive treatment, which takes up different proportions in different periods of the disease, and is complementary to each other, and is the complete embodiment of humanistic care and patient-oriented, which is the result of the progress of medical philosophy. Accepting, mastering and applying palliative medicine well will certainly further improve the treatment effect and the quality of life of cancer patients.