Swollen gums from catching a cold can be the result of plaque or calculus, gingivitis, and pericoronitis of wisdom teeth. It should not be directly related to catching a cold. Depending on the cause, general treatment, medication or surgery can be taken. 1. Plaque or calculus: supragingival cleaning and subgingival scraping are recommended to remove irritants around the teeth. If the local periodontal pockets are deep, hydrogen peroxide and potassium permanganate can be used to rinse the local periodontal pockets; it is also necessary to do regular ultrasonic scaling to remove calculus, which can alleviate the swelling caused by cold. 2. Gingivitis: Gingivitis can lead to gum soft tissue congestion, swelling. It is recommended to repeatedly rinse the gingival sulcus or periodontal pockets with hydrogen peroxide solution, cephidium chloride gargle, etc. Meanwhile, oral cefadroxil delayed-release tablets, cefixime granules, cefdinir capsules, etc., to control the anaerobic bacteria of gingivitis, which can alleviate the symptoms of gingivitis due to coldness and swelling. 3. Wisdom tooth pericoronitis: it is the inflammatory reaction of the soft tissue around the crown of the wisdom tooth in the process of obstruction, which can lead to gingival cold gingival swelling. Oral antibiotics, such as metronidazole tablets, tinidazole tablets, ceftriaxone sodium and other drugs can be taken for treatment. If an abscess forms, surgery can be performed to remove the abscess or remove the wisdom teeth. Cold gum swelling may also have other reasons, it is recommended that the patient timely consultation, clear cause of the disease and follow the doctor’s instructions for treatment and medication. Avoid blindly self-medication.