After the surgery for the earliest stage of in situ breast cancer, it is not easy to recur under usual circumstances, but the possibility of recurrence is not ruled out. Breast cancer is a kind of malignant tumor, and after early breast cancer in situ is treated through surgery, it will not recur under usual circumstances. If early breast cancer patients are detected and treated early, most of them can be cured after surgical removal. However, some patients may experience recurrence or metastasis within a few years after surgery. If the patient suffers from in situ breast cancer, it is recommended to cooperate with the doctor to actively carry out standardized treatment and regular review after surgery to avoid the possibility of recurrence.