The discharge time after lymph node dissection for breast cancer depends on the patient’s recovery and the presence of complications. If the recovery is faster and there are no complications, the patient is usually hospitalized for about 1 week and can be discharged. If recovery is slow or complications occur, the patient will need to stay in the hospital for about 2 weeks before discharge. Lymph node dissection for breast cancer refers to a surgery in which the lymph nodes around the primary tumor, mainly the axillary lymph nodes, need to be cleared after the tumor is removed to determine whether there is any invasion by the tumor cells. After lymph node dissection for breast cancer, if the patient recovers quickly and has no complications, he/she can be discharged from the hospital in about 1 week. After lymph node dissection for breast cancer, if the patient recovers slowly or develops complications such as bleeding, subcutaneous fluid accumulation, lymphatic fistula or flap necrosis, the hospitalization time will be relatively longer, and it usually takes about 2 weeks to be discharged from the hospital. After being discharged from the hospital, patients should pay close attention to their physical condition and go to the hospital for regular checkups to prevent recurrence. If there is any discomfort after surgery, consult a doctor promptly.