Gingivitis is usually characterized by red, swollen gums and bleeding gums. 1. Red gums: Normally, normal gums are pink in color. In the case of gingivitis, the free gums and gingival papillae will become dark red or dark red, i.e., the gums are red and swollen. 2. Swollen gums: Normal gums have thin margins and are close to the surface of the teeth. When suffering from gingivitis, tissue edema will make the edge of the gums become thicker, no longer close to the surface of the teeth, and the gingival papillae will also become soft and enlarged. When attached to the gingival edema, the surface is smooth and shiny. 3. Bleeding gums: when suffering from gingivitis, brushing or touching the gums will appear bleeding gums. Precautions:It is recommended to seek timely medical treatment when suffering from gingivitis to avoid delayed treatment.