Small particles under the eyes are commonly seen as fat grains, granulomas, and sweat duct tumors. If the symptoms are serious, you should go to the hospital in time. 1. Fat grain: mostly caused by fat metabolism disorder or bad make-up habits. Mostly beige or white particles are distributed around the eyes. Avoid spicy and irritating food in your daily diet, and go to the hospital if the symptoms are serious. 2. Corns: Commonly found in the lower eyelid area, the size of a grain of rice, a hard bulge. Pay attention to eye hygiene in daily life, if it is too close to the eyes, eye drops or surgery can be used. 3. Sweat duct tumor: a benign tumor of sweat gland ducts, mostly seen in young women, not easy to be malignant. If necessary, surgery or laser treatment is feasible. Small particles under the eyes can also be seen in chalazion, blepharitis, etc. It is recommended that patients go to the hospital in a timely manner, improve the examination to determine the cause of the disease, and then give targeted treatment or treatment.