Fatty granules are usually referred to as milia, but are occasionally mistaken for sweat duct tumors, and are usually found around the eyes, but can also occur on the forehead and knees, often appearing as beige granules. The formation of milia is related to heredity, etc. They may be tiny cysts formed by over-keratinization of the openings of hair follicles, sweat glands, or sebaceous glands, etc. They are similar in appearance to stones, and appear as yellowish-white firm papules, with smooth surfaces that do not fuse with each other, and can be extruded to produce a keratinous-like substance. Usually no treatment is needed and they can subside on their own. Sweat duct tumor is a kind of benign tumor involving sweat ducts, usually with family genetic history, symmetrically distributed in the lower eyelids, in addition to the forehead, cheeks, neck and other places are more common, for the normal skin color or brown flat papules, can be densely released, or a single occurrence. It can be treated with electrolysis or laser, but there is a possibility of recurrence. Whether cornu rashes or sweat duct tumors, its form is similar, the onset of the same site, it is recommended that patients with fat grains timely to the regular hospital dermatology department for a clear diagnosis, standardized treatment under the guidance of the doctor.