There is no fast way to reduce the swelling of swollen gums, swollen gums can be caused by wisdom teeth pericoronitis, periapical periodontitis, gum cancer and so on, you can take medication, surgical treatment and other ways to reduce the swelling. 1. Wisdom tooth pericoronitis: If the gums are swollen and painful due to wisdom tooth pericoronitis, it is necessary to rinse the affected area with 0.1% chlorhexidine solution, 3% hydrogen peroxide solution and other solutions under the guidance of the doctor. In addition, patients can also follow the doctor’s instructions with clindamycin, metronidazole and other antibiotics. Some patients also need to take incision and drainage, wisdom tooth extraction, coronal gingival flap excision treatment. 2. Periapical inflammation: If the wisdom tooth area has periapical inflammation that may lead to swollen and painful gums that can’t open the mouth, the patient can follow the doctor’s instructions with antibiotics, such as metronidazole, cefixime and so on. In addition, patients also need to take root canal therapy, as well as apical curettage, tooth extraction treatment. 3. Gum cancer: for gum cancer causing swollen and painful gums and inability to open mouth, maxillary enlarged resection or mandibular segmental resection can be taken as treatment, and some patients also need to undergo cervical lymph node dissection treatment. In addition, patients can take radiotherapy. It is suggested that patients who have swollen gums and pain and cannot open their mouths need to consult doctor in time, and the doctor will choose appropriate methods to treat their conditions.