The diagnosis of swollen gums is mainly determined by clinical symptoms. Patients with kidney yin deficiency and deficiency fire on inflammation mostly see slightly swollen and slightly red gums, with vague and continuous pain, unconsolidated tooth shaking, or with blood in the teeth, and the rest is not special. Patients with stomach fire on inflammation mostly see swollen and painful gums, localized burning, bitter and bad breath, etc. Inflammatory gingival atrophy is mainly manifested by red, swollen and painful gums, and bleeding is common when brushing teeth. It is also important to strengthen the differential diagnosis between this condition and symptoms such as gingival hypertrophy, itchy and swollen gums, and bleeding gums. Differential diagnosis of gingival swelling: 1, gingival hypertrophy: during pregnancy due to changes in hormone levels during pregnancy can cause gingival hypertrophy and other conditions, prone to gingivitis and gingival bleeding, especially after brushing teeth, which is a common symptom in late pregnancy. 2, gingival itching and swelling: exfoliative gingivitis is a syndrome, this syndrome is often accompanied by oral moss or aspergillosis. The typical symptoms of self-diagnosed pulpitis are bleeding gums and itchy gums. 3, gum bleeding: gum bleeding is one of the common symptoms of dentistry. In general, bleeding gums are commonly seen in the early stages of periodontitis – gingivitis. Gum bleeding does not only appear in diseases of dentistry, it also appears in other diseases of the whole body and may indicate diseases of other systems, such as leukemia, after encountering radioactive radiation, autoimmune diseases, etc. In recent years, the relationship between periodontal disease and diabetes is also increasingly recognized by the medical community.