Long acne on both sides of the ear, clinically refers to sebaceous cyst infection. This situation is mainly due to the following reasons: the first reason, the patient’s diet, some patients like to eat spicy stimulation, greasy, not easy to digest the food, easy to lead to the patient’s endocrine imbalance, so that the sebaceous glands on both sides of the ear secretion abnormality, and thus appear long acne. The second reason, bacterial infection, some patients often sweat on both sides of the ear, easy to induce local infection, leading to bacterial invasion of sebaceous glands, inducing sebaceous gland infection, that is, long acne. The third reason, some patients may be living habits, irregular work and rest, often stay up late and fire, work tension, emotional anxiety, also easily lead to endocrine disorders. The sebaceous glands on both sides of the ears secrete abnormally, inducing sebaceous gland cyst infection.