The pink soft tissue that surrounds the neck of the tooth and covers the bone tissue of the upper and lower jaws is commonly referred to as the dental bed, which is the common term for the gums and contains many nerves and blood vessels. The swelling and pain of the tooth bed is actually a swollen gum, which is mainly caused by inflammation of the gums. Gum inflammation occurs for many reasons: poor oral hygiene, plaque formation, calculus, improper brushing posture, gum damage, food-embedded gingivitis, and drug-induced gingivitis. When gum swelling and pain has formed, if the oral hygiene is poor, it is recommended to go to regular dentistry for dental scaling treatment in time to fundamentally remove local irritants (calculus and plaque) and inflammatory factors, control oral bacteria breeding and treat gum swelling and pain; if it is caused by systemic diseases, the primary disease should be actively treated and anti-inflammatory drugs should be used to control inflammation. In addition to regular periodontal maintenance treatment at the dentistry department, we should also pay attention to good oral hygiene habits, rinsing after meals, brushing in the morning and evening, brushing for not less than 3-5 minutes each time, cleaning the upper and lower left and right occlusal surfaces, each tooth surface carefully, and brushing in the correct posture without horizontal brushing, which can avoid damaging the gums and effectively control plaque formation.