Stem cells may be effective in the treatment of breast cancer, but it is still in the experimental stage. If breast cancer occurs, it is necessary to go to the hospital in time to choose the individualized treatment method suitable for the patient under the guidance of the doctor, for example, to carry out surgery, chemotherapy and other methods of treatment. Stem cells are a class of cells with self-renewal ability, capable of generating highly differentiated progeny cells, which can be differentiated into cells of various tissues of the body and do not require mating, and may be effective in the treatment of breast cancer, but it is still necessary to choose a suitable treatment under the guidance of the doctor. Breast cancer patients should ensure nutritional intake, maintain a good state of mind, do not have too much stress, go to the hospital as early as possible and follow the doctor’s instructions to receive treatment to relieve symptoms.