Frequent pimples on the chin in your 30s may be related to acne, or caused by seborrheic dermatitis, acne vulgaris, rosacea and other diseases, which need to be treated with medication or laser for different causes. 1. Acne: Adjusting lifestyle and dietary habits, ensuring sleep, and eating a light diet can reduce acne. Stubborn acne can be treated with topical fusidic acid cream, adapalene gel, and oral isotretinoin capsules. 2. Seborrheic dermatitis: oral vitamin B6 tablets, compound glycyrrhizin tablets and other drugs for treatment, local topical calcium phosphatase inhibitors such as pimecrolimus, tacrolimus ointment and other drugs. At the same time, pay attention to the use of oil cleanser to regularly clean the facial skin, and do a good job of moisturizing. 3. Sudoria: mainly grows in the place of beard, can use topical sterilization and anti-inflammatory ointment such as fusidic acid cream, metronidazole gel for treatment. 4. Rosacea: oral minocycline capsules or metronidazole tablets for treatment, can be combined with red and blue light, helium neon laser and other medical light treatment. If you are in your 30s and often have acne on your chin, it is recommended to go to the hospital in time to get a clear diagnosis and symptomatic treatment, and the medication should be used according to the doctor’s instructions.