The high nipple is particularly obvious related to mechanical stimulation, nipple inflammation, tumors and other factors: first, the height of the nipple is about 1.5-2cm, and the normal nipple is relatively soft, but when the nipple area encounters sexual stimulation or mechanical stimulation, the nipple will suddenly become erect and significantly higher, but after the stimulation, the nipple can return to normal within a short time. Secondly, the nipple is dry and fissured due to external forces, such as trauma, local lack of oil secretions to moisten the nipple, and the invasion of Staphylococcus aureus into the nipple and breast ducts, causing local inflammation, resulting in inflammatory manifestations such as redness, enlargement, and pain in the nipple. Finally, if the nipple is obviously enlarged, it is considered to be caused by tumor in the nipple area, which can be examined in the breast surgery department of the hospital. Malignant tumor in the nipple area, which grows faster in a short period of time, will lead to obvious protrusion of the nipple.