Patients with swollen and painful gums are advised to avoid stimulating foods such as onions, leeks, raw garlic, etc. Don’t smoke or drink heavily, and don’t eat foods that are too hard or cold to avoid damage to the gums. Your diet should be light and soft, and avoid high oil and salt. It is important to note that in practice, the cause of gum swelling and pain and the severity of the condition can vary significantly from patient to patient, and diet is only one part of the treatment of the disease. Therefore, if you have any discomfort, it is recommended that you actively consult a doctor who will develop a proper treatment plan and give you reasonable dietary advice according to your specific situation.