The dirt on the nipple is considered to be the secretion of the mammary gland, the mammary gland has the function of secretion, the secretion is discharged through the mammary ducts, the nipple is the opening of the mammary ducts, so there will be secretion of scabs, pay attention to do a good job of cleaning and hygiene around the nipple, to keep the local clean and dry. Normal skin cells will appear apoptosis, the formation of stratum corneum, with the passage of time stratum corneum gradually fall off, easy to have debris, local washing can be removed, the nipple on the dirty thing is also considered to be the skin off the stratum corneum, usually pay attention to keep clean, try to avoid excessive rubbing, to avoid leading to damage, caused by infection. Nipple inflammation will appear local secretion, oozing increased, can also lead to nipple dirt, wash with water, oral antibiotic medication, can soon be improved, try to go to the regular hospital diagnosis.