There are many reasons why nipples have fat grain-like things, the specific analysis is as follows: 1, nipple allergy, such as contact with allergic tissues, nipple allergy will appear pimples, like fat grains, accompanied by nipple itching, swelling and pain, nipple distension, and actively carry out anti-allergy treatment. 2, grease particles, too much secretion from the sebaceous glands of the breast, the nipple does not get cleaned in time, coagulation into granules, you need to clean the skin in time to ensure that the breasts and nipples Clean and dry. 3, solidified milk, pregnancy or lactation lactogen increase, breast production of milk, secretion of milk coagulation on the surface of the nipple, fat grain-like, milk flow out of the nipple in time to wash the nipple, to ensure that nipple hygiene. 4, fat particles, as long as there is the presence of fat, there may be fat particles, fat particles need surgical treatment, the need to protect the operative area after surgery to prevent infection.