Gums are usually swollen and painful due to poor oral hygiene, which induces gingivitis, and the swelling is mainly reduced by medication and teeth cleaning. Medications include topical medications (hydrogen peroxide solution and chlorhexidine rinses) and dental cleanings. 1. Vitamins: Vitamin C and Vitamin A can effectively improve the restorative ability and promote the recovery of periodontal tissues. 2. Local medication: After removing plaque and food debris, rinse with hydrogen peroxide solution and saline. In addition, you can also use gargling drugs, such as chlorhexidine gargling solution, mouth Thai gargling solution. The use of drugs need to follow the doctor’s instructions, service should not be blind. 3. Dental cleaning: Remove tartar and plaque from the surface of the teeth as soon as possible to reduce dental irritation. If the gums are not treated in time, they may turn into periodontitis, leading to loose teeth. Certain systemic diseases may also manifest as swollen and painful gums, so it is recommended that you seek medical attention in a timely manner.