If your nipples are dirty, you can wash them with warm water to remove the secretions, apply warm compresses with a warm towel, and do ductal lavage if necessary. 1. The nipple is the opening of the mammary gland, the mammary gland will have a certain secretion function, so there will be some secretion around the nipple, if not clean in time, there will be dirt, which is easy to get infected with bacteria, etc. Especially during the breastfeeding period, we should pay more attention to the local cleanliness, to prevent the bacteria from retrogressing to cause the local infections, which can lead to acute mastitis. 2. The nipples can be cleaned with a warm towel, then with warm water to remove the secretions around the nipple, wipe the action to be gentle, to avoid vigorously caused by skin damage. If the cleaning is not timely, there will also be breast duct obstruction occurs, need to go to the regular hospital in time to deal with. 3. Cleaning the nipple can also be done breast duct irrigation treatment, the use of lactoscope will be injected directly into the milk ducts, the milk ducts are cleaned, the lesions of the treatment. This technique is based on the anatomy of the mammary gland and its ducts, making full use of the closed duct system of the breast tissue for drug delivery and cleaning. For specific cleansing methods for stained nipples, consult a medical professional for advice.