Pimples, also known as acne, are often associated with inflammation around the hair follicles, proliferation of Propionibacterium acnes and other factors. It is recommended to pay attention to daily care and give appropriate medication. 1. Causes: The causes of acne have not been fully clarified. It is considered to be related to high androgen levels during puberty, heredity, proliferation of Propionibacterium acnes, overproduction of sebum, and abnormal keratinization of follicular sebaceous gland ducts. 2.Treatment: (1) Pay attention to daily care: it is recommended to adjust the diet and reduce the intake of spicy, stimulating and greasy food. Ensure sufficient sleep and avoid staying up late for a long time. (2) Medication: Go to the dermatology department of the hospital, and the treatment plan is related to the severity of the disease. For mild acne, medications such as Vitamin A cream and Adapalene gel can be given under doctor’s supervision. Oral medications such as minocycline and doxycycline can be given when accompanied by visible inflammatory papules. For more severe acne, oral medications such as isotretinoin capsules may be given. If necessary, photodynamic therapy can also be used to inhibit sebum secretion and kill Propionibacterium acnes. Frequent acne, it is recommended to pay attention to life and dietary regulation, but also combined with the doctor’s advice to give medication, the specific use of drugs need to follow the doctor’s instructions.