A 9-year-old child with small pimples on his face is considered to be acne, folliculitis, contact dermatitis, etc. The main treatment is medication. 1. acne: some children develop earlier, 9 years old has entered puberty, this time the hormone level rises, will lead to sebaceous gland secretion of acne, pay attention to strengthen the clean, can be applied locally Vitamin A acid cream treatment. 2. Folliculitis: most folliculitis is caused by Staphylococcus aureus infection of the hair follicles, you can use chlorhexidine gluconate solution, povidone-iodine solution to disinfect, and apply mupirocin ointment, fusidic acid cream and so on. 3. Contact dermatitis: If you are in contact with an allergic or irritating substance, such as a certain skin care product, it can lead to an inflammatory reaction. You should avoid re-exposure and take cetirizine and loratadine orally when symptoms are severe. There may be other reasons why a 9-year-old child has small acne on his face, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment. All of the above drugs should be used in accordance with the doctor’s instructions, not blindly use their own.