Most white pustules on the nipple during breastfeeding are considered in two ways: one is a blocked milk duct, where the white fluid is milk, and the other is a blocked opening of the milk duct, which is infected with pus. Both cases require cleaning and sterilization followed by surgical incision to drain out the white fluid inside. If it is a blocked milk duct, the milk is drained after the incision, and the symptoms will disappear when the milk duct is cleared. If it is pus caused by infection, after incision to drain out the pus, clean and disinfect it with iodophor, change the medicine regularly, you can squeeze the breast properly to drain out the stagnant milk, rinse the locally infected area, and treat with antibacterial drugs if necessary. No matter which situation it belongs to, it is recommended to go to the hospital, so that the doctor can treat the symptoms.