Pimples on the cheeks and jaws, usually referred to as acne, are commonly caused by endocrine factors, dietary factors, hygiene factors and so on. 1. Endocrine factors: Higher levels of androgens will stimulate the sebaceous glands of the hair follicles and make their secretion activities become vigorous, which will easily lead to pore clogging and follicle infections, resulting in the appearance of pimples on the face, which is mostly seen in puberty. 2. Dietary factors: eating a lot of greasy, spicy and stimulating food in daily life can cause the follicle sebaceous secretion, and bacteria are easy to breed in it, which leads to acne on the face. 3. Hygiene factors: some people like to touch their cheeks with their hands, hold their chins, etc., or make-up removal is not complete, daily skin cleaning is not in place, etc., may also cause pore clogging, so that the face is prone to pimples. It is recommended that people with such skin problems adjust their habits in a timely manner, and if acne persists or has a tendency to worsen, go to the hospital in a timely manner, follow the doctor’s instructions for standardized treatment, and do not blindly use medication.