Radiotherapy can cause different degrees of side effects for every breast cancer patient, some of them are very mild, some have no obvious symptoms, while some patients have very serious reactions. The most common side effects are: ① fatigue. ② Dry, itchy, cracked or blistered skin. ③Digestive system reactions such as nausea, stomach pain, abnormal taste, and loss of appetite. ④ Other side effects, such as axillary radiation therapy, then axillary hair loss; head radiation therapy, dry mouth, tinnitus, etc.; pleural and lung radiation therapy, causing dry cough without sputum, throat itching and other side effects. Once the above side effects occur during radiotherapy, most of them will disappear with time, and some of them can be reduced after treatment and life conditioning. If the side effects are particularly serious, radiotherapy can be interrupted. The following is an introduction to the relevant, simple and practical treatment methods, for reference only. 1, fatigue: due to the radiotherapy, the body consumes a lot of energy, as well as the impact of radiotherapy on normal cells, causing fatigue. When patients feel fatigue, they should take sufficient rest, organize their life, ensure sleep and sufficient nutritional supplements. 2, skin side effects: clear oil can be used to deal with dry skin, such as the skin is too wet, you can sprinkle some cornstarch. When the skin is red or brown, pay attention to the treatment site should not be subjected to sunlight, after the end of radiotherapy, usually within a few weeks can disappear. If you find the skin cracked, blisters, must find a doctor for treatment. Do not use powder, cream, ointment and other commercially available skin care products. 3, armpit hair loss: to prevent hair loss is very difficult to do, but after the end of radiotherapy, most patients will regrow hair in the armpit. 4.Gastrointestinal reaction: Good eating habits, nutritious meals and diversification of recipes may stimulate the appetite and enhance it. If the digestive tract reaction is severe, radiotherapy may be stopped.