The symptoms of nipple erosion should be alerted to the symptoms of some diseases, such as breast eczema, nipple erosive adenoma, mammary eczema-like carcinoma, etc. The causes should be identified and dealt with. 1, due to pregnancy, baby sucking nipple on the breast stimulation or ingesting allergy-inducing food and other factors can induce breast eczema, thus appearing the symptoms of nipple erosion, usually accompanied by oozing, nipple erythema or papules and so on. Clinically, tacrolimus ointment or glucocorticoid suppositories are commonly used for topical application, and antihistamines such as loratadine and cetirizine can be taken orally, and breastfeeding women need to use the drugs in strict compliance with the doctor’s instructions. 2, nipple erosive adenomatosis may be related to the body estrogen, progesterone imbalance, belong to benign tumors. Patients may have symptoms such as nipple erosion, breast milk spillage, pain, localized lumps and so on. The nipple erosion caused by erosive adenomatosis of the nipple is usually treated by surgery to avoid recurrence of the disease through complete removal of the tumor. 3、Mammary eczema-like carcinoma: It mainly manifests as eczema-like changes such as repeated breakage, crusting, shedding with local itching and pain in the nipple areola area, and with the progress of lesions, swelling in the breast can also appear. In addition, allergies and skin diseases may also appear the symptoms of nipple erosion, the symptoms of nipple erosion, the patient should consult the doctor in time to find out the cause, and actively cooperate with the doctor’s treatment.