The patient has a yellow pimple at the corner of the eye, which may be caused by fat grain, blepharospasm, blepharocanthoma and so on. 1. Fat grain: fat grain may be due to the patient’s body endocrine disorders, resulting in excessive secretion of oil at the corner of the eye, the skin is not thoroughly clean, resulting in pore clogging caused by the patient’s eye can appear around the eye fat grain. 2. Blepharoplakia: Blepharoplakia is caused by degeneration and proliferation of conjunctival cells, and yellow bumps may appear in the inner corners of the eyes of patients. 3. Blepharocanthoma: Blepharocanthoma is a metabolic disorder skin disease, which is the most common type of xanthomatosis. Blepharocanthoma is a yellow or orange patch of skin caused by lipid deposition in the eyelid area. Blepharocanthoma may occur on the eyelid or in the corner of the eye. Over time, they can expand and even involve the entire eyelid, appearing as yellowish patches or bumps. It is recommended that patients with yellow bumps at the corners of the eyes that do not resolve over a long period of time visit a regular hospital to have their condition evaluated and treated as prescribed by their doctor.