Breast cancer patients can consider vaccination if their condition is stable after surgery. Breast cancer patients are not allowed to get vaccinated during treatment such as radiotherapy, chemotherapy and targeting, because if they get vaccinated when their condition is progressing, when they are weak or when they have fever, the vaccine may produce an immune effect, which makes the patient’s ability to resist disease decrease, thus aggravating their condition and affecting the immune effect. Vaccination is also not recommended when the immune function is relatively low during the recovery period after breast cancer surgery. Instead, after the patient’s treatment is completely finished, the condition is relatively stable, and if there are no obvious uncomfortable symptoms, vaccination will be considered without affecting the condition and immune effect. If diagnosed with breast cancer, the patient should actively cooperate with the treatment, adopt surgery, chemotherapy or radiotherapy treatment methods, and keep an optimistic and positive mindset, which is better for the recovery and healing of the disease.