Nipple damage usually does not affect breast development, the main factors affecting breast development include hormones, genetic factors, nutritional factors and physical exercise, etc.; however, if nipple damage is accompanied by breast infection, it will affect breast development. 1. Hormones: Ovaries produce estrogen and progesterone, which promote breast development; breast development is affected by the anterior pituitary gland, ovarian endocrine hormones and adrenal cortex. 2. Genetic factors: In the process of growth and development, genes determine various genetic traits; the influence of heredity on growth and development is mainly manifested in the family and race. 3. Nutritional factors: the rapid development of breasts during puberty, the metabolism is vigorous, the amount of calories and various nutrients required is relatively high compared to adults, especially in the critical stage of growth and development, the need for nutrition is particularly prominent, adequate nutritional intake is conducive to the development of breasts. 4. Breast infection: can lead to redness, swelling, heat and pain in the breast, widespread bacterial infection leading to limited breast development; treatment, nipple localized iodophor repeated scrubbing, serious condition can be localized erythromycin, metronidazole and other antibiotic ointment to control the infection; some patients may have allergic reactions such as skin rashes, comply with the instructions of the medication. Nipple damage if uncomfortable symptoms, it is recommended that early standardized treatment to reduce the adverse effects of the disease.