According to the World Health Organization (WHO), there are 7 million new cancer patients worldwide every year, and at least 4 million of them are suffering from cancer pain, while the pain of advanced cancer patients is as high as 60-90%, and some of them even have severe or unbearable pain. Compared with other pains, cancer pain has two characteristics: First, cancer pain is more intense. Patients often describe it as painful and unbearable. The other characteristic is that it lasts longer and is difficult to disappear after it appears, and it will be constantly present, it is a recurring, persistent and worsening process. For this reason, WHO has listed cancer pain control as one of the four priorities of comprehensive cancer planning, and has proposed the goal of “making all cancer patients pain-free” worldwide. It is worth noting that home treatment is now available for difficult-to-treat cancer pain. Cancer is characterized by a long and highly variable disease, which makes treatment difficult. The time of hospitalization for cancer pain patients is relatively short, and most of the time of survival with tumor is spent at home, so it is very important for patients to be treated at home. Nowadays, it has become a trend in developed countries for cancer pain patients to be treated at home. A part of cancer pain patients can take oral painkillers at home under the guidance of doctors. In addition, for some patients with particularly stubborn cancer pain or those who are not satisfied with the effect of drugs, PCA can be used to relieve pain. The pumping speed can be selected according to the pain level. There is a self-control button on the top of the pump, so that the patient can press the injection amount when he/she feels pain. Depending on the location, extent and degree of pain, there are three ways to inject drugs into the body: epidural, intravenous and subcutaneous. Generally speaking, patients with pain below the chest and relatively fixed location and extent are suitable for injection via the epidural cavity (PCEA); those with widespread pain or difficulty in puncturing the epidural cavity are suitable for injection via the vein (PCIA) or subcutaneously (PCSA). The pain pump is about the size of a radio, with a buckle on the face, so it can be hung around the waist, put in a pocket, and put on the pillow at night. It can be carried in your pocket when you go out and can automatically pump pain medication 24 hours a day according to your doctor’s settings. Of course, patients also have some “permission” to press the automatic button when they feel increased pain, which will increase the amount of pain medication injected. Patients who are not hospitalized can be placed in the hospital and take it home with them, and the medication can be added to the pump at regular intervals, or patients who are too ill to come to the hospital can ask their pain doctor to place it at the patient’s home. The greatest benefit of this new technology is to improve the quality of survival for patients with advanced cancer, who can move freely and do not have to spend their last days lying in a hospital room. Being at home in the late stages does have many benefits. This modality is convenient and economical, and can be implemented under the guidance of a health care professional or a specially trained general practitioner. It can not only relieve family members of many strains, but also facilitate emotional communication and psychological guidance, so that patients can receive more end-of-life care in their fading lives. Therefore, it is better for patients to take care of cancer pain at home.