You can get the new crown vaccine if you have breast cancer, but it is generally not recommended for patients who are undergoing radiotherapy and follow the doctor’s instructions. Breast cancer is a malignant tumor, according to China’s new crown vaccination guidelines, people with breast cancer can be vaccinated with the new crown vaccine. However, if breast cancer patients are undergoing radiotherapy, it is not recommended to receive the new crown vaccine at this time, because the immunity of breast cancer patients is relatively low during the treatment period, and receiving the new crown vaccine at this time may lead to an increase in the probability of adverse reactions. The new crown vaccine includes inactivated vaccine, recombinant subunit vaccine and adenovirus vector vaccine, and breast cancer patients need to choose the appropriate new crown vaccine under the guidance of doctors.