If you have swollen and painful gums, you should check the cause of the swollen and painful gums. If a low-density image is found in the apical part of the tooth after radiography, root canal treatment can be done to remove the tooth nerve and then cut the abscess from the gum, which is good for drainage and can promote the reduction of gum swelling and pain. If the teeth are intact but there are periodontal problems, you can take oral anti-inflammatory drugs to promote gum swelling, do local scaling and scaling of periodontal teeth, and then rinse and apply local medication, commonly used drugs are iodine glycerin or minocycline hydrochloride, which can promote gum swelling and pain remission. In addition, it is recommended to have regular scaling, generally it is recommended to clean once in half a year to once a year, and it is recommended to keep a good oral cavity, to brush teeth every morning and evening, and to do effective brushing, and to have regular examination. If tooth decay occurs, it should be treated in time.