Breast cancer is a malignant tumor located in the chest and is a very common malignant tumor in women, and very rarely occurs in men. There are no special dietary contraindications for breast cancer, and prunes are allowed to be eaten according to one’s taste. Of course, some breast cancer patients may experience acid reflux, nausea and vomiting during chemotherapy treatment, so it is not recommended to eat anything too acidic in this case. In this case, it is not recommended to eat anything too acidic, such as prunes, which may cause acid reflux to worsen. Of course, if the patient has no reaction or no obvious gastrointestinal reaction, it is also possible to eat. Other dietary requirements are not special, appropriate supplementation of high-quality protein, such as fish, eggs, protein powder, etc. are very good, as well as fresh vegetables to eat a little more, drink more water can help reduce the reaction to treatment.