Bad gums caused by trauma need to be sutured, etc., if caused by periodontitis need periodontal treatment, if caused by ulcerative stomatitis can be treated with medication. 1. Trauma: bad gums can be caused by trauma, there can be a tear of the gums, etc., need to go to the hospital in time for trauma suturing. 2. Periodontitis: bad gums can also be caused by periodontitis, bleeding and swelling of the gums or even receding gums, periodontal treatment can be carried out, including scaling, periodontal scaling. 3. Ulcerative stomatitis: ulcerative stomatitis can occur when the gums and other mucosal inflammation, you can use hydrogen peroxide to rinse the ulcerated surface, you can also use ice boron powder, oral ulcers and other treatments. If the gums are bad, go to the hospital in time to check, the use of the above drugs need to follow the doctor’s instructions.