Brown raised bumps on the face may be caused by pigmented nevi, seborrheic keratosis, and flat warts. Patients can be treated by surgery, laser, freezing and topical medication. 1. Pigmented nevus: When the nevus cells in the body proliferate, pigmented lesions will occur and pigmented nevus will appear, which will lead to brown raised bumps on the face. It can be treated by surgery, CO2 laser, cryosurgery and other methods. 2. Seborrheic keratosis: common in the elderly, is an abnormal proliferation of keratin in the skin of the elderly, resulting in a degenerative changes, which will make the face long brown raised bumps. It can be treated by scraping and electrocautery. 3. flat warts: if infected with human papilloma virus can cause viral flat warts, which can lead to long brown bumps on the face. It can be treated by applying drugs such as imiquimod ointment and vincristine ointment, or you can choose CO2 laser to directly beat off the lesions. When patients have brown raised bumps on their face, they should go to the hospital in time for examination and treatment, and specific drugs should be used under the guidance of doctors.