There is a possibility of recurrence of breast cancer with microinvasion of 1mm, the recurrence of breast cancer is affected by many aspects, such as the size of the tumor and the type of the tumor, it is recommended to go to the hospital for examination and treatment in time. Generally speaking, breast cancer has the possibility of recurrence, especially when the tumor is larger than 2cm, usually there is a subclinical lesion, so there is a risk of recurrence, and it is necessary to reduce the incidence of recurrence through adjuvant chemotherapy after surgery, and at the same time, it is necessary to do a good job of preventive measures, as far as possible to avoid the recurrence of breast cancer. Breast cancer with microinvasion is less than 1 mm, but due to its infiltrative nature, there is a possibility of recurrence if it is not treated in time. ERPR-positive and HER-2-negative, the recurrence rate is low, but if it is triple-negative or HER-2-positive breast cancer, the recurrence rate is higher, so it should be noted and emphasized. Once diagnosed, it should be treated as soon as possible. Early invasive breast cancer patients are recommended to take radical surgical resection in time before the tumor has metastasis or spread. After surgery, attention should be paid to review.