The reason why breast nodules recur after surgery may be related to bad habits, incomplete cure, cancer and other factors. 1. Bad habits: Breast nodules belong to a wide range of concepts, which may be caused by cysts, fibroadenomas, inflammation and infection, etc. If the patients do not pay attention to the care after the surgery, and have bad habits, it may increase the chance of recurrence of breast nodules after the surgery. 2. Incomplete cure: When breast nodules are surgically removed, if the surgeon has not completely removed the nodules, it may cause the disease to recur, especially under the influence of high estrogen level in the body. 3. Cancer: If the breast nodule belongs to the category of cancer, such as breast cancer, the cancer cells may spread or metastasize even after surgery, thus causing the disease to recur. The above situation may also be due to the growth of other small nodules, which is not a true recurrence. It is recommended that the patient go to the breast surgery department of the hospital for consultation, and cooperate with the doctor to clarify the specific cause before taking the next step.