Lack of appetite, nausea and vomiting and other gastrointestinal and digestive reactions are the most likely adverse reactions of patients after radiotherapy and chemotherapy. These reactions not only produce psychological burden on patients, but also reduce patients’ confidence in chemotherapy, and families should pay attention to them. During radiotherapy and chemotherapy, if nausea and vomiting symptoms occur, family members may want to try the following methods: 1. It is best not to eat within 2 hours before receiving radiotherapy or chemotherapy. 2.Lack of appetite during radiotherapy and chemotherapy, do not force to eat, the more forced to eat the more likely to have adverse reactions. 3, drinks or water is best to drink 30 minutes before eating, and straws are appropriate, but drinking drinks should be light, warm, not cold. 4, food to avoid choosing too sweet or too greasy, appropriate sour, salty taste can help relieve nausea, in cooking dishes for patients, appropriate addition of lemon juice can also help relieve nausea. 5.Avoid intake of food that is too cold or too hot. 6.Appropriate rest after meals, but it is best not to lie flat; when sleeping, use the side lying position. 7.Keep the patient away from various cooking smells such as fumes and keep the air flowing in the room. 8.You can engage in light activities, such as listening to music, watching TV or talking with other people to distract yourself from the disease; when you feel nauseous, let your body relax and take deep breaths slowly. 9.When cooking meat food, it is best to blanch the meat with ginger before cooking, which can remove the fishy smell of meat and is more acceptable to patients. 10, family members should also often change the food, dish color matching and cooking methods, etc., to enhance the sense of smell, visual stimulation, to make up for the lack of patients’ sense of taste. 11, nausea, vomiting, listen to music, let the body relax, slowly do deep breathing, has the effect of relieving stomach discomfort.