Chin pimples are a symptom of acne, which is mainly related to factors such as high androgen levels and sebum secretion. Staying up late, eating poorly or using skin care products that are not tolerated by the skin are also likely to induce acne. Acne is caused by high androgen levels in the body inducing a large amount of sebum secretion, keratinization of the sebaceous gland ducts of the hair follicles leading to sebum can not be discharged, a large amount of sebum accumulation in the hair follicles induced by Propionibacterium acnes to proliferate, the fatty acids metabolized by Propionibacterium acnes stimulate inflammatory reaction of the skin, resulting in the formation of acne. In addition, staying up late and eating too much spicy, oily and irritating food can also increase sebum secretion, thus inducing acne. Using skin care products and cosmetics that are not tolerated by the skin can irritate the skin and aggravate acne. There are many triggering factors for chin acne, so it is recommended to seek timely medical treatment for acne and follow the doctor’s instructions for medication.