Pimples are generally referred to as acne, and chin pimples may be caused by improper diet, exuberant sebaceous gland secretion and endocrine disorders. 1. Improper diet: the intake of high sugar, greasy, spicy and stimulating food may lead to chin acne. It is usually characterized by red or dark red pimples, some of which have pus heads. 2. Excessive sebaceous gland secretion: because the sebaceous gland secretes too much oil, blocking the mouth of the hair follicle, causing follicle keratinization and hyperplasia, and inducing acne bacillus to multiply, thus leading to chin acne. 3. Endocrine disorders: puberty will increase the secretion of androgens in the body, leading to exuberant sebaceous gland secretion, pore blockage leads to sebaceous gland secretion is not smooth, sebum in the pores of the accumulation of bacteria and inflammation is more likely to breed and turn into pimples. Patients with the phenomenon of chin acne, should go to the hospital in time to improve the relevant examination, under the guidance of the doctor standardized treatment.