If you can still express milk after weaning for more than a year, you are considered to have incomplete milk return and milk stagnation. If you express a small amount of milk, you do not need treatment, a small amount of residual milk does not have any effect on your body. Most of the milk can be absorbed gradually over time, but only the nipples often have overflow and need to go to the hospital in time. The nipple overflow needs to be examined to rule out infection in the ducts of the breast, which is more commonly white or yellowish liquid. If the overflow is bloody or brown, it should be ruled out as papilloma in the milk ducts, which is mostly seen in menstruating mothers, and the bleeding is caused by the thin blood vessel wall of the tumor.